/* ==========================================================================
   style.css - Design System, Core Tokens, Layout, Components, & Micro-Interactions
   Khaled Ibrahim - Junior Backend .NET Developer Portfolio
   ========================================================================== */

/* 1. CSS Custom Properties / Design Tokens */
:root {
  /* Dark Theme (Default) */
  --bg-primary: #171615;
  --bg-secondary: #292725;
  --accent: #D8AE63;
  --accent-hover: #E8CC96;
  --accent-bright: #E8CC96;
  --accent-secondary: #A87C38;
  --accent-light: #F0DDB5;
  --accent-highlight: #F0DDB5;
  --accent-glow: rgba(216, 174, 99, 0.18);

  --surface-base: #292725;
  --surface-card: #211F1D;
  --surface-card-hover: #302B27;
  --surface-glass: rgba(33, 31, 29, 0.78);
  --section-wash: rgba(41, 39, 37, 0.42);

  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(232, 204, 150, 0.55);
  --border-active: #D8AE63;

  --text-primary: #F6F0E5;
  --text-secondary: #B9B1A5;
  --text-muted: #81786B;
  --text-code: #F0DDB5;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.45s cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.42);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.58);
  --shadow-glow: 0 0 25px rgba(240, 221, 181, 0.18);

  --container-max: 1200px;
  --header-height: 72px;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-primary: #F6F0E5;
  --bg-secondary: #EFE4D0;
  --accent: #A87C38;
  --accent-hover: #C99A4D;
  --accent-bright: #A87C38;
  --accent-secondary: #8D642C;
  --accent-light: #D8AE63;
  --accent-highlight: #A87C38;
  --accent-glow: rgba(168, 124, 56, 0.14);

  --surface-base: #F0EBE4;
  --surface-card: #FFFFFF;
  --surface-card-hover: #F0EBE4;
  --surface-glass: rgba(245, 242, 237, 0.88);
  --section-wash: rgba(234, 228, 220, 0.72);

  --border: rgba(41, 39, 37, 0.1);
  --border-hover: rgba(152, 97, 58, 0.45);
  --border-active: #A87C38;

  --text-primary: #24211E;
  --text-secondary: #625B54;
  --text-muted: #81786F;
  --text-code: #8D642C;

  --shadow-sm: 0 2px 8px rgba(41, 39, 37, 0.08);
  --shadow-md: 0 8px 20px rgba(41, 39, 37, 0.12);
  --shadow-lg: 0 16px 36px rgba(41, 39, 37, 0.16);
  --shadow-glow: 0 0 20px rgba(152, 97, 58, 0.16);
}

/* 2. Reset & Baseline Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  position: relative;
}

/* Cinematic window light behind the existing animated canvas. */
body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow), background var(--transition-slow);
}

body::before {
  z-index: -3;
  background: linear-gradient(115deg, #29231A 0%, #1C1A17 38%, #171615 70%, #121211 100%);
}

body::after {
  z-index: -2;
  opacity: 0.9;
  background:
    radial-gradient(ellipse at 4% 15%, rgba(240, 221, 181, 0.24) 0%, rgba(216, 174, 99, 0.15) 18%, rgba(201, 154, 77, 0.06) 35%, transparent 58%),
    linear-gradient(115deg, rgba(216, 174, 99, 0.10) 0%, transparent 38%),
    linear-gradient(90deg, transparent 0 11%, rgba(20, 18, 15, 0.16) 12%, transparent 16%),
    linear-gradient(180deg, transparent 0 28%, rgba(20, 18, 15, 0.14) 29%, transparent 34%),
    linear-gradient(122deg, transparent 0 27%, rgba(246, 240, 229, 0.06) 28%, transparent 42%);
}

[data-theme="light"] body::before {
  background: linear-gradient(115deg, #EFE4D0 0%, #F6F0E5 42%, #F8F5EF 100%);
}

[data-theme="light"] body::after {
  opacity: 0.42;
  background:
    radial-gradient(ellipse at 3% 14%, rgba(240, 221, 181, 0.32) 0%, rgba(216, 174, 99, 0.12) 24%, transparent 54%),
    linear-gradient(90deg, transparent 0 12%, rgba(168, 124, 56, 0.06) 13%, transparent 18%),
    linear-gradient(180deg, transparent 0 29%, rgba(168, 124, 56, 0.05) 30%, transparent 35%);
}

body.modal-open,
body.mobile-menu-open {
  overflow: hidden;
}

/* Accessible Skip Link */
.skip-to-content {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--accent-bright);
  color: #211F1D;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top var(--transition-fast);
  text-decoration: none;
}

.skip-to-content:focus {
  top: 15px;
}

/* Focus Visible */
:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

code, pre {
  font-family: var(--font-mono);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Background Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}

/* Custom Cursor (Desktop Only) */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--accent-bright);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  transform: translate3d(-100px, -100px, 0);
  transition: width 0.15s ease, height 0.15s ease, background-color 0.15s ease;
  margin: -4px 0 0 -4px;
}

.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--accent-bright);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99998;
  transform: translate3d(-100px, -100px, 0);
  transition: width 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              height 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.2s ease,
              background-color 0.2s ease;
  margin: -16px 0 0 -16px;
  opacity: 0.65;
}

.cursor-ring.cursor-hover {
  width: 48px;
  height: 48px;
  margin: -24px 0 0 -24px;
  border-color: var(--accent-secondary);
  background-color: var(--accent-glow);
  opacity: 0.9;
}

.cursor-ring.cursor-active {
  transform: scale(0.85);
  border-color: #ffffff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 0.938rem;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #E8CC96 0%, #D8AE63 48%, #C99A4D 100%);
  color: #2A2116;
  border-color: #D8AE63;
  box-shadow: 0 4px 16px rgba(201, 154, 77, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #F0DDB5 0%, #E8CC96 48%, #D8AE63 100%);
  box-shadow: 0 8px 24px rgba(216, 174, 99, 0.30);
}

.btn-outline {
  background: rgba(216, 174, 99, 0.05);
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-outline:hover {
  background: rgba(216, 174, 99, 0.15);
  border-color: var(--accent-bright);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(216, 174, 99, 0.1);
}

.btn-placeholder {
  opacity: 0.85;
  cursor: default;
}

/* Section Header Shared Styles */
.section {
  padding-top: 100px;
  padding-bottom: 100px;
  position: relative;
}

/* Keep the animated canvas visible while giving alternating sections a warm,
   theme-aware surface wash. */
.section:nth-of-type(even) {
  background-color: var(--section-wash);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.813rem;
  font-weight: 600;
  color: var(--accent-bright);
  background: rgba(216, 174, 99, 0.08);
  border: 1px solid rgba(216, 174, 99, 0.22);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.063rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   3. Sticky Navigation Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base),
              backdrop-filter var(--transition-base);
  border-bottom: 1px solid transparent;
}

.site-header.header-scrolled {
  background-color: var(--surface-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.nav-logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #211F1D;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1rem;
  box-shadow: 0 2px 10px rgba(216, 174, 99, 0.3);
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
}

.nav-logo-name {
  line-height: 1.1;
}

.nav-logo-status {
  font-size: 0.688rem;
  font-family: var(--font-mono);
  color: #10B981;
  display: flex;
  align-items: center;
  gap: 5px;
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10B981;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent-bright);
  background: rgba(216, 174, 99, 0.08);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 12px;
  right: 12px;
  height: 2px;
  background-color: var(--accent-bright);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(216, 174, 99, 0.06);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: rgba(216, 174, 99, 0.15);
  border-color: var(--accent-bright);
}

.theme-icon-sun,
.theme-icon-moon {
  transition: transform var(--transition-base), opacity var(--transition-base);
}

[data-theme="dark"] .theme-icon-sun {
  display: block;
}
[data-theme="dark"] .theme-icon-moon {
  display: none;
}

[data-theme="light"] .theme-icon-sun {
  display: none;
}
[data-theme="light"] .theme-icon-moon {
  display: block;
}

/* Mobile Hamburger Button */
.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(216, 174, 99, 0.06);
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  z-index: 1001;
}

.hamburger-line {
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-btn.is-active .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.mobile-menu-btn.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
}
.mobile-menu-btn.is-active .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(23, 22, 21, 0.7);
  backdrop-filter: blur(12px);
  z-index: 999;
  visibility: hidden;
  opacity: 0;
  transition: visibility var(--transition-base), opacity var(--transition-base);
}

.mobile-nav-content {
  position: absolute;
  top: var(--header-height);
  right: 0;
  width: 82%;
  max-width: 340px;
  height: calc(100vh - var(--header-height));
  background-color: var(--surface-base);
  border-left: 1px solid var(--border);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
}

.mobile-nav-drawer.is-open {
  visibility: visible;
  opacity: 1;
}

.mobile-nav-drawer.is-open .mobile-nav-content {
  transform: translateX(0);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav-link {
  font-size: 1.063rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--accent-bright);
  background: rgba(216, 174, 99, 0.08);
}

.mobile-nav-footer {
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ==========================================================================
   4. Landing Page / Hero Section
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 70px;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 50px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.813rem;
  color: var(--accent-highlight);
  background: rgba(240, 221, 181, 0.08);
  border: 1px solid rgba(240, 221, 181, 0.25);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero-title-accent {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-role {
  font-family: var(--font-mono);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  color: var(--accent-bright);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-role::before {
  content: '>';
  color: var(--text-muted);
}

.hero-tagline {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
  border-left: 3px solid var(--accent-bright);
  padding-left: 14px;
}

.hero-bio {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 640px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: rgba(216, 174, 99, 0.05);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.hero-meta-item svg {
  color: var(--accent-bright);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-card-frame {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 16px;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.hero-card-frame:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.profile-img-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--surface-base);
  border: 1px solid rgba(216, 174, 99, 0.12);
}

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.profile-img-container:hover .profile-img {
  transform: scale(1.04);
}

.hero-floating-badge {
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-base);
  border: 1px solid var(--accent-bright);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  white-space: nowrap;
}

/* Micro Corner Accents */
.hero-card-frame::before,
.hero-card-frame::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--accent-bright);
  pointer-events: none;
}
.hero-card-frame::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--accent-bright);
  border-left: 2px solid var(--accent-bright);
  border-top-left-radius: var(--radius-xl);
}
.hero-card-frame::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--accent-bright);
  border-right: 2px solid var(--accent-bright);
  border-bottom-right-radius: var(--radius-xl);
}

/* ==========================================================================
   5. About Me Section
   ========================================================================== */
.about-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-md);
  position: relative;
}

.about-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.terminal-file-title {
  font-family: var(--font-mono);
  font-size: 0.813rem;
  color: var(--text-muted);
}

.about-paragraphs {
  display: flex;
  flex-direction: column;
  gap: 18px;
  font-size: 1.063rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.about-paragraphs .about-closing {
  padding-left: 16px;
  border-left: 2px solid var(--accent);
  color: var(--text-secondary);
  font-weight: 400;
}

.about-highlights-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.about-stat-box {
  background: rgba(216, 174, 99, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.about-stat-box:hover {
  transform: translateY(-3px);
  border-color: var(--accent-bright);
}

.stat-number {
  font-size: clamp(1.35rem, 1.9vw, 1.875rem);
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1.1;
  margin-bottom: 6px;
  white-space: nowrap;
}

.stat-label {
  font-size: 0.813rem;
  color: var(--text-secondary);
}

/* About: shared rhythm for stacked subsections (capabilities / integration / snapshot) */
.about-block {
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.about-subheading {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin: 0 0 20px;
}

.snapshot-outro {
  margin-top: 18px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* About: Backend Capabilities grid */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.capability-domain {
  background: rgba(216, 174, 99, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.capability-domain:hover {
  transform: translateY(-3px);
  border-color: var(--accent-bright);
}

.capability-domain-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 12px;
}

.capability-domain-title svg {
  color: var(--accent-bright);
  flex-shrink: 0;
}

.capability-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.capability-list li {
  padding-left: 16px;
  position: relative;
}

.capability-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent-bright);
}

/* About: Projects Snapshot grid */
.snapshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.snapshot-card {
  background: rgba(216, 174, 99, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.snapshot-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-bright);
}

.snapshot-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.snapshot-title-wrap {
  min-width: 0;
}

.snapshot-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 2px;
}

.snapshot-tagline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-bright);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.snapshot-desc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-secondary);
  flex-grow: 1;
}

.snapshot-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.snapshot-status {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Compact icon-only variant of .btn, used for the Projects Snapshot repo links
   and for placeholder projects that have no public repo yet */
.btn-icon-only {
  width: 38px;
  height: 38px;
  min-width: 38px;
  padding: 0;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* Disabled/placeholder buttons: visually present but genuinely non-interactive.
   Using <button disabled> (not a href="#" link) removes it from tab order and
   is announced correctly by screen readers, instead of behaving like a dead link. */
button.btn-placeholder {
  opacity: 0.5;
  cursor: not-allowed;
}

button.btn-placeholder:hover {
  background: transparent;
  color: var(--text-secondary);
  transform: none;
}

/* ==========================================================================
   6. Education Section
   ========================================================================== */
.education-container {
  max-width: 860px;
  margin: 0 auto;
}

.education-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.education-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-bright);
}

.education-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.education-title-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
}

.education-icon-box {
  width: 52px;
  height: 52px;
  background: rgba(216, 174, 99, 0.1);
  border: 1px solid rgba(216, 174, 99, 0.25);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-bright);
}

.education-degree {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.education-institution {
  font-size: 1rem;
  color: var(--text-secondary);
}

.education-period-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.938rem;
  font-weight: 700;
  color: var(--accent-highlight);
  background: rgba(240, 221, 181, 0.08);
  border: 1px solid rgba(240, 221, 181, 0.25);
  padding: 8px 16px;
  border-radius: var(--radius-full);
}

.education-details {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.gpa-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.938rem;
  font-weight: 600;
  color: #10B981;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
}

.graduation-project-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  padding: 6px 12px 6px 10px;
  border: 1px solid rgba(216, 174, 99, 0.42);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, rgba(216, 174, 99, 0.16), rgba(168, 124, 56, 0.08));
  color: var(--text-primary);
  box-shadow: inset 0 1px 0 rgba(240, 221, 181, 0.08), 0 4px 14px rgba(0, 0, 0, 0.12);
  white-space: nowrap;
}

.graduation-project-badge::before {
  content: "✦";
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent));
  color: #2A2116;
  font-size: 0.72rem;
  box-shadow: 0 0 12px rgba(216, 174, 99, 0.24);
}

.graduation-project-label {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}

.graduation-project-badge strong {
  color: var(--accent-bright);
  font-size: 0.86rem;
  letter-spacing: 0.01em;
}

/* ==========================================================================
   7. Technical Skills Section
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.skill-category-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.skill-category-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-bright);
  box-shadow: var(--shadow-md);
}

.skill-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.skill-cat-title {
  font-size: 1.188rem;
  font-weight: 700;
}

.skill-percentage-badge {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-bright);
}

.skill-bar-track {
  width: 100%;
  height: 6px;
  background: rgba(216, 174, 99, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 20px;
}

.skill-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  border-radius: var(--radius-full);
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-pills-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-pill {
  font-family: var(--font-mono);
  font-size: 0.813rem;
  color: var(--text-secondary);
  background: rgba(216, 174, 99, 0.05);
  border: 1px solid var(--border);
  padding: 5px 11px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.tech-pill:hover {
  color: var(--text-primary);
  background: rgba(216, 174, 99, 0.15);
  border-color: var(--accent-bright);
}

.tech-pill-more {
  color: var(--accent-bright);
  background: rgba(216, 174, 99, 0.1);
}

/* ==========================================================================
   8. Experience Section
   ========================================================================== */
.experience-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 36px;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-bright), var(--accent), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  top: 24px;
  left: -36px;
  width: 26px;
  height: 26px;
  background: var(--surface-base);
  border: 2px solid var(--accent-bright);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px rgba(216, 174, 99, 0.5);
  z-index: 2;
}

.timeline-marker-inner {
  width: 8px;
  height: 8px;
  background: var(--accent-bright);
  border-radius: 50%;
}

.timeline-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.timeline-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-bright);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.timeline-role {
  font-size: 1.313rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-role-accent {
  color: var(--accent-bright);
}

.timeline-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(216, 174, 99, 0.1);
  color: var(--accent-bright);
  border: 1px solid rgba(216, 174, 99, 0.2);
}

.timeline-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

.timeline-responsibilities-title {
  font-size: 0.875rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.responsibilities-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.responsibilities-list li {
  font-size: 0.938rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.55;
}

.resp-bullet {
  color: var(--accent-bright);
  font-weight: bold;
}

/* ==========================================================================
   9. Services Section
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-bright);
  box-shadow: var(--shadow-md);
}

.service-icon-box {
  width: 48px;
  height: 48px;
  background: rgba(216, 174, 99, 0.08);
  border: 1px solid rgba(216, 174, 99, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-bright);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.service-card:hover .service-icon-box {
  background: var(--accent-bright);
  color: #211F1D;
  transform: scale(1.05);
}

.service-title {
  font-size: 1.188rem;
  font-weight: 700;
  line-height: 1.3;
}

.service-desc {
  font-size: 0.906rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   10. Featured Projects Section
   ========================================================================== */
.projects-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 44px;
}

.filter-btn {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--surface-card);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-bright);
}

.filter-btn.active {
  color: #211F1D;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent-secondary));
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(216, 174, 99, 0.3);
}

/* Keep this project category available in the markup, but hide its filter tab. */
.category-hidden {
  display: none !important;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.project-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-bright);
  box-shadow: var(--shadow-lg);
}

.project-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--surface-base);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  top: 14px;
  right: 14px;
}

.project-role-badge {
  font-family: var(--font-mono);
  font-size: 0.688rem;
  font-weight: 600;
  background: rgba(23, 22, 21, 0.85);
  color: var(--accent-highlight);
  border: 1px solid rgba(240, 221, 181, 0.3);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.project-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-header {
  margin-bottom: 12px;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.project-subtitle {
  font-size: 0.844rem;
  color: var(--accent-bright);
  font-weight: 500;
}

.project-desc {
  font-size: 0.906rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
}

.project-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.project-key-features {
  margin-bottom: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* Keep project highlights available in the details modal only. */
.project-card .project-key-features {
  display: none;
}

.features-title {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.features-list li {
  font-size: 0.844rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

.bullet-icon {
  color: var(--accent-bright);
  font-size: 0.75rem;
  margin-top: 2px;
}

.project-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.project-actions .btn {
  padding: 8px 14px;
  font-size: 0.844rem;
}

/* ==========================================================================
   11. Project Details Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  visibility: hidden;
  opacity: 0;
  transition: visibility var(--transition-base), opacity var(--transition-base);
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(23, 22, 21, 0.85);
  backdrop-filter: blur(12px);
}

.modal-window {
  position: relative;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform var(--transition-base);
  z-index: 2;
  padding: 36px;
}

.modal-overlay.is-open {
  visibility: visible;
  opacity: 1;
}

.modal-overlay.is-open .modal-window {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(216, 174, 99, 0.08);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 3;
}

.modal-close-btn:hover {
  background: rgba(216, 174, 99, 0.15);
  border-color: var(--accent-hover);
  color: var(--accent-hover);
}

/* Modal Content Styles */
.modal-project-header {
  margin-bottom: 28px;
}

.modal-media-wrap {
  position: relative;
  width: 100%;
  height: 240px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

.modal-project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-role-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(23, 22, 21, 0.9);
  color: var(--accent-highlight);
  border: 1px solid rgba(240, 221, 181, 0.3);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
}

.modal-heading {
  font-size: 1.875rem;
  margin-bottom: 6px;
}

.modal-subheading {
  font-size: 1rem;
  color: var(--accent-bright);
  margin-bottom: 14px;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.modal-section {
  margin-bottom: 24px;
}

.modal-section-title {
  font-size: 1.063rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.modal-section-title svg {
  color: var(--accent-bright);
}

.modal-text {
  font-size: 0.969rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.modal-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.modal-check-list,
.modal-highlight-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.modal-check-list li,
.modal-highlight-list li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}

.feature-icon {
  color: #10B981;
  font-weight: bold;
}

.highlight-bullet {
  color: #F59E0B;
}

.modal-footer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  margin-top: 28px;
}

/* ==========================================================================
   12. Achievements & Certificates Section
   ========================================================================== */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.cert-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform var(--transition-base), border-color var(--transition-base);
  position: relative;
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-bright);
}

.cert-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.cert-icon-wrap {
  width: 50px;
  height: 50px;
  background: rgba(216, 174, 99, 0.1);
  border: 1px solid rgba(216, 174, 99, 0.25);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-bright);
}

.cert-status-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.status-completed {
  background: rgba(16, 185, 129, 0.12);
  color: #10B981;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-in-progress {
  background: rgba(245, 158, 11, 0.12);
  color: #F59E0B;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.cert-title {
  font-size: 1.313rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.cert-issuer {
  font-size: 0.938rem;
  color: var(--accent-bright);
  font-weight: 500;
}

.certificate-download-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 40px;
  margin-top: auto;
  padding: 10px 18px;
  border: 1px solid var(--accent-bright);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--accent-bright);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  box-shadow: none;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.certificate-download-button:hover,
.certificate-download-button:focus-visible,
.certificate-download-button:active {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-bright) 52%, var(--accent) 100%);
  color: #2A2116;
  border-color: var(--accent);
  box-shadow: 0 7px 20px var(--accent-glow);
}

.certificate-download-button:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
}

.certificate-download-button:active {
  transform: translateY(0);
}

.cert-grade-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.grade-badge {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: #10B981;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.cert-topics-title {
  font-size: 0.813rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.cert-topics-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cert-note-box {
  margin-top: auto;
  padding: 12px 16px;
  background: rgba(216, 174, 99, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.844rem;
  color: var(--text-secondary);
}

.cert-note-box strong {
  color: var(--text-primary);
}

/* ==========================================================================
   13. Feedback / Testimonials Section
   ========================================================================== */
.testimonials-wrapper {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
}

.testimonials-slider {
  position: relative;
  min-height: 280px;
  overflow: hidden;
}

.testimonial-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  transform: translateX(40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow), visibility var(--transition-slow);
}

.testimonial-slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  position: relative;
}

.testimonial-slide.prev {
  transform: translateX(-40px);
}

.testimonial-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-md);
  text-align: center;
  position: relative;
}

.quote-icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(216, 174, 99, 0.1);
  border-radius: 50%;
  color: var(--accent-bright);
  margin-bottom: 20px;
}

.testimonial-quote {
  font-size: 1.125rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.author-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.author-role {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.placeholder-badge {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.688rem;
  color: var(--accent-bright);
  background: rgba(216, 174, 99, 0.08);
  border: 1px dashed rgba(216, 174, 99, 0.3);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.slider-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slider-btn:hover {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  color: #211F1D;
}

.testimonial-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.testimonial-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.testimonial-dot.active {
  width: 24px;
  border-radius: var(--radius-full);
  background: var(--accent-bright);
}

/* ==========================================================================
   14. Contact Section ("Let's Work Together")
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.contact-info-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-md);
}

.contact-headline {
  font-size: 2rem;
  margin-bottom: 12px;
}

.contact-desc {
  font-size: 1.063rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 30px;
}

.contact-items-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.contact-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(216, 174, 99, 0.04);
  border: 1px solid var(--border);
  padding: 14px 20px;
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.contact-item-row:hover {
  border-color: var(--accent-bright);
}

.contact-item-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-icon-circle {
  width: 40px;
  height: 40px;
  background: rgba(216, 174, 99, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-bright);
}

.contact-label-group {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
}

.contact-val-link {
  font-size: 0.969rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-val-link:hover {
  color: var(--accent-bright);
}

.btn-copy-info {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 12px;
  font-size: 0.813rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-copy-info:hover {
  background: rgba(216, 174, 99, 0.1);
  color: var(--text-primary);
}

.btn-copy-info.copied {
  background: rgba(16, 185, 129, 0.15);
  border-color: #10B981;
  color: #10B981;
}

.contact-social-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-cta-panel {
  background: linear-gradient(135deg, var(--surface-card), rgba(216, 174, 99, 0.16));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-md);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.panel-icon-wrap {
  width: 64px;
  height: 64px;
  background: rgba(216, 174, 99, 0.15);
  border: 1px solid var(--accent-bright);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-bright);
}

.panel-title {
  font-size: 1.5rem;
}

.panel-text {
  font-size: 0.969rem;
  color: var(--text-secondary);
  max-width: 380px;
}

/* ==========================================================================
   15. Footer
   ========================================================================== */
.site-footer {
  background: transparent;
  border-top: 0;
  padding-top: 32px;
  padding-bottom: 32px;
}

.site-footer > .container {
  max-width: 1080px;
}

.footer-top-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 36px;
  position: relative;
  border-bottom: 0;
}

.footer-top-grid::after {
  content: "";
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: 0;
  border-bottom: 1px solid var(--border);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-brand-name {
  font-size: 0.844rem;
  font-weight: 400;
  color: var(--text-muted);
}

.footer-brand-title {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.footer-nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-nav-link {
  font-size: 0.906rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--accent-bright);
}

.footer-social-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-social-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(216, 174, 99, 0.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-social-btn:hover {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  color: #211F1D;
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-top: 30px;
  font-size: 0.844rem;
  color: var(--text-muted);
}

.footer-bottom-bar span:last-child {
  display: inline;
}

/* Back to top button */
.back-to-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.back-to-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  color: #211F1D;
  transform: translateY(-3px);
}

/* ==========================================================================
   16. Scroll Reveal States & Keyframes
   ========================================================================== */
.reveal {
  opacity: 0;
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.is-revealed,
.reveal-up.is-revealed,
.reveal-left.is-revealed,
.reveal-right.is-revealed {
  opacity: 1;
  transform: translate(0, 0);
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal,
  .reveal-up,
  .reveal-left,
  .reveal-right {
    opacity: 1 !important;
    transform: none !important;
  }
  .cursor-dot,
  .cursor-ring {
    display: none !important;
  }
}