/**
 * ============================================================
 * STYLE.CSS — Portfolio Stylesheet
 * ============================================================
 *
 * Table of Contents:
 *
 * 1.  CSS Variables & Theming
 * 2.  Reset & Base
 * 3.  Typography
 * 4.  Utilities
 * 5.  Skip Link (Accessibility)
 * 6.  Loader
 * 7.  Navigation
 * 8.  Hero
 * 9.  Statistics
 * 10. Section (Shared)
 * 11. About
 * 12. Skills
 * 13. Journey (Timeline)
 * 14. Projects
 * 15. Education
 * 16. Certificates
 * 17. Vision
 * 18. Contact
 * 19. Footer
 * 20. Back to Top
 * 21. Modal
 * 22. Scroll Reveal Animations
 * 23. Responsive — Tablet (max-width: 1024px)
 * 24. Responsive — Mobile (max-width: 768px)
 * 25. Responsive — Small Mobile (max-width: 480px)
 * 26. Reduced Motion
 * 27. Print Styles
 *
 * ============================================================
 */

/* ============================================================
 * 1. CSS VARIABLES & THEMING
 * ============================================================ */

:root {
  /* --- Spacing (8px system) --- */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.5rem;    /* 24px */
  --space-6: 2rem;      /* 32px */
  --space-7: 2.5rem;    /* 40px */
  --space-8: 3rem;      /* 48px */
  --space-9: 4rem;      /* 64px */
  --space-10: 5rem;     /* 80px */
  --space-11: 6rem;     /* 96px */
  --space-12: 8rem;     /* 128px */

  /* --- Typography --- */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.5rem;
  --fs-4xl: 3rem;
  --fs-5xl: 3.5rem;

  /* --- Border Radius --- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 50%;

  /* --- Shadows --- */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.25);

  /* --- Transitions --- */
  --transition-fast: 200ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* --- Layout --- */
  --container-max: 1200px;
  --navbar-height: 72px;

  /* --- Z-Index Scale --- */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-loader: 500;
}

/* --- Dark Theme (Default) --- */
[data-theme='dark'] {
  --bg-primary: #0a192f;
  --bg-secondary: #112240;
  --bg-tertiary: #1a2f4e;
  --bg-card: rgba(17, 34, 64, 0.7);
  --bg-glass: rgba(17, 34, 64, 0.6);
  --bg-glass-border: rgba(100, 255, 218, 0.08);

  --text-primary: #e6f1ff;
  --text-secondary: #a8b2d1;
  --text-tertiary: #8892b0;
  --text-muted: #606a86;

  --accent-primary: #64ffda;
  --accent-secondary: #38bdf8;
  --accent-tertiary: #a78bfa;

  --border-color: rgba(100, 255, 218, 0.1);
  --border-hover: rgba(100, 255, 218, 0.3);

  --shadow-glow: 0 0 20px rgba(100, 255, 218, 0.1);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);

  --gradient-accent: linear-gradient(135deg, #64ffda, #38bdf8);
  --gradient-bg: linear-gradient(180deg, #0a192f 0%, #112240 100%);

  --scrollbar-track: #112240;
  --scrollbar-thumb: #1a2f4e;
}

/* --- Light Theme --- */
[data-theme='light'] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-border: rgba(10, 25, 47, 0.08);

  --text-primary: #0a192f;
  --text-secondary: #334155;
  --text-tertiary: #64748b;
  --text-muted: #94a3b8;

  --accent-primary: #0a8a6a;
  --accent-secondary: #0369a1;
  --accent-tertiary: #7c3aed;

  --border-color: rgba(10, 25, 47, 0.1);
  --border-hover: rgba(10, 25, 47, 0.25);

  --shadow-glow: 0 0 20px rgba(10, 138, 106, 0.08);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);

  --gradient-accent: linear-gradient(135deg, #0a8a6a, #0369a1);
  --gradient-bg: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);

  --scrollbar-track: #f1f5f9;
  --scrollbar-thumb: #cbd5e1;
}

/* ============================================================
 * 2. RESET & BASE
 * ============================================================ */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-base), color var(--transition-base);
}

body.menu-open {
  overflow: hidden;
}

body.loaded .loader {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

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

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

a:hover {
  color: var(--accent-secondary);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

::selection {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

/* ============================================================
 * 3. TYPOGRAPHY
 * ============================================================ */

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

/* ============================================================
 * 4. UTILITIES
 * ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
 * 5. SKIP LINK (Accessibility)
 * ============================================================ */

.skip-link {
  position: fixed;
  top: -100%;
  left: var(--space-4);
  z-index: var(--z-loader);
  padding: var(--space-3) var(--space-5);
  background: var(--accent-primary);
  color: var(--bg-primary);
  font-weight: 600;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* ============================================================
 * 6. LOADER
 * ============================================================ */

.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader__spinner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
}

.loader__ring {
  position: absolute;
  inset: 0;
  border: 3px solid transparent;
  border-top-color: var(--accent-primary);
  border-radius: var(--radius-full);
  animation: loaderSpin 1s linear infinite;
}

.loader__text {
  font-family: var(--font-mono);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--accent-primary);
}

@keyframes loaderSpin {
  to { transform: rotate(360deg); }
}

/* ============================================================
 * 7. NAVIGATION
 * ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--navbar-height);
  transition: background-color var(--transition-base),
              box-shadow var(--transition-base),
              backdrop-filter var(--transition-base);
}

.navbar.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-md);
}

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

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--fs-lg);
  z-index: var(--z-overlay);
}

.navbar__logo:hover {
  color: var(--accent-primary);
}

.navbar__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  color: var(--bg-primary);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: var(--fs-sm);
  border-radius: var(--radius-md);
  transition: transform var(--transition-spring);
}

.navbar__logo:hover .navbar__logo-icon {
  transform: rotate(-8deg) scale(1.05);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--accent-primary);
  background: rgba(100, 255, 218, 0.05);
}

.navbar__link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent-primary);
  border-radius: 1px;
}

.navbar__link-icon {
  font-size: var(--fs-xs);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  z-index: var(--z-overlay);
}

.navbar__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar__btn--icon {
  width: 40px;
  height: 40px;
  color: var(--text-secondary);
  font-size: var(--fs-md);
}

.navbar__btn--icon:hover {
  color: var(--accent-primary);
  background: rgba(100, 255, 218, 0.05);
}

.navbar__btn--cv {
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  font-size: var(--fs-sm);
  font-weight: 500;
}

.navbar__btn--cv:hover {
  background: rgba(100, 255, 218, 0.1);
}

.navbar__btn--menu {
  display: none;
  width: 40px;
  height: 40px;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.navbar__btn--menu[aria-expanded='true'] .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__btn--menu[aria-expanded='true'] .hamburger__line:nth-child(2) {
  opacity: 0;
}

.navbar__btn--menu[aria-expanded='true'] .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
 * 8. HERO
 * ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--navbar-height);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero__glow {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(120px);
  opacity: 0.15;
  animation: heroGlow 8s ease-in-out infinite alternate;
}

.hero__glow--1 {
  top: 10%;
  left: 10%;
  width: 500px;
  height: 500px;
  background: var(--accent-primary);
}

.hero__glow--2 {
  bottom: 10%;
  right: 10%;
  width: 400px;
  height: 400px;
  background: var(--accent-secondary);
  animation-delay: 4s;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, -20px) scale(1.1); }
}

.hero__container {
  position: relative;
  z-index: var(--z-base);
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-9);
  padding-block: var(--space-9);
}

.hero__greeting {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--accent-primary);
  margin-bottom: var(--space-3);
}

.hero__name {
  font-size: clamp(var(--fs-3xl), 5vw, var(--fs-5xl));
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.1;
}

.hero__title {
  font-size: clamp(var(--fs-lg), 2.5vw, var(--fs-2xl));
  font-weight: 600;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--space-5);
}

.hero__tagline {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: var(--space-3);
}

.hero__motto {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  font-style: italic;
  margin-bottom: var(--space-7);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn--primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border: 2px solid var(--accent-primary);
}

.btn--primary:hover {
  background: transparent;
  color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(100, 255, 218, 0.25);
}

.btn--secondary {
  background: transparent;
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
}

.btn--secondary:hover {
  background: rgba(100, 255, 218, 0.1);
  transform: translateY(-2px);
}

.hero__social {
  display: flex;
  gap: var(--space-4);
}

.hero__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--text-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--fs-lg);
  transition: all var(--transition-base);
}

.hero__social-link:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.hero__image {
  display: flex;
  justify-content: center;
}

.hero__image-wrapper {
  position: relative;
  width: 350px;
  height: 350px;
  animation: heroFloat 7s ease-in-out infinite;
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

@keyframes heroFloat {
  0%   { transform: translateY(0) translateZ(0); }
  25%  { transform: translateY(-10px) translateZ(0); }
  50%  { transform: translateY(-18px) translateZ(0); }
  75%  { transform: translateY(-10px) translateZ(0); }
  100% { transform: translateY(0) translateZ(0); }
}

.hero__image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  position: relative;
  z-index: 2;
}

.hero__image-border {
  position: absolute;
  inset: -8px;
  border: 2px solid var(--accent-primary);
  border-radius: var(--radius-lg);
  transform: translate(12px, 12px);
  opacity: 0.4;
  transition: transform var(--transition-base);
}

.hero__image-wrapper:hover .hero__image-border {
  transform: translate(8px, 8px);
}

.hero__image-dots {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 100px;
  height: 100px;
  background-image: radial-gradient(var(--accent-primary) 1.5px, transparent 1.5px);
  background-size: 12px 12px;
  opacity: 0.3;
  z-index: 1;
}

/* ============================================================
 * 9. STATISTICS
 * ============================================================ */

.stats {
  position: relative;
  padding-block: var(--space-9);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.stat-card__icon {
  font-size: var(--fs-2xl);
  color: var(--accent-primary);
  margin-bottom: var(--space-4);
}

.stat-card__value {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-card__label {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  font-weight: 500;
}

/* ============================================================
 * 10. SECTION (Shared)
 * ============================================================ */

.section {
  padding-block: var(--space-11);
}

.section:nth-child(even) {
  background: var(--bg-secondary);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-9);
}

.section__title {
  font-size: clamp(var(--fs-2xl), 3vw, var(--fs-3xl));
  font-weight: 800;
  margin-bottom: var(--space-3);
}

.section__subtitle {
  font-size: var(--fs-md);
  color: var(--text-tertiary);
  max-width: 500px;
  margin-inline: auto;
}

.section__divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
  margin: var(--space-5) auto 0;
}

/* ============================================================
 * 11. ABOUT
 * ============================================================ */

.about__content {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: var(--space-9);
  align-items: start;
}

.about__image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--border-color);
  transition: border-color var(--transition-base);
}

.about__image-wrapper:hover {
  border-color: var(--accent-primary);
}

.about__image-wrapper img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about__image-wrapper:hover img {
  transform: scale(1.03);
}

.about__summary {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  line-height: 1.8;
}

.about__objective {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  padding: var(--space-4);
  background: var(--bg-card);
  border-left: 3px solid var(--accent-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: var(--space-6);
  font-style: italic;
}

.about__details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.about__detail-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.about__detail-icon {
  color: var(--accent-primary);
  font-size: var(--fs-md);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.about__detail-label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.about__detail-value {
  font-size: var(--fs-sm);
  color: var(--text-primary);
  font-weight: 500;
}

.about__values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.about__value-card {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.about__value-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.about__value-icon {
  color: var(--accent-primary);
  font-size: var(--fs-lg);
  flex-shrink: 0;
  margin-top: var(--space-1);
}

.about__value-title {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.about__value-desc {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
}

/* ============================================================
 * 12. SKILLS
 * ============================================================ */

.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.skill-card {
  padding: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--skill-color, var(--accent-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.skill-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.skill-card:hover::before {
  transform: scaleX(1);
}

.skill-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.skill-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(100, 255, 218, 0.08);
  color: var(--skill-color, var(--accent-primary));
  border-radius: var(--radius-md);
  font-size: var(--fs-xl);
  flex-shrink: 0;
}

.skill-card__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text-primary);
}

.skill-card__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-chip {
  padding: var(--space-1) var(--space-3);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: 500;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.skill-card:hover .skill-chip {
  border-color: var(--border-hover);
}

/*==========================================================
    TESTIMONIALS
==========================================================*/

.testimonials{
    position:relative;
}

.testimonials__slider{
    margin-top:4rem;
}

/*----------------------------------------------------------
    EMPTY STATE
----------------------------------------------------------*/

.testimonials-empty{
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    text-align:center;
    gap:1rem;

    min-height:320px;

    padding:3rem;

    border:1px dashed var(--border-color);

    border-radius:var(--radius-xl);

    background:var(--bg-card);
}

.testimonials-empty i{
    font-size:3rem;
    color:var(--accent-primary);
}

.testimonials-empty h3{
    font-size:var(--fs-xl);
    color:var(--text-primary);
}

.testimonials-empty p{
    max-width:520px;
    color:var(--text-tertiary);
    line-height:1.8;
}

/*----------------------------------------------------------
    GRID (1-3 Testimonials)
----------------------------------------------------------*/

.testimonials-grid{

    display:grid;

    grid-template-columns:
        repeat(auto-fit,minmax(340px,1fr));

    gap:2rem;

    align-items:stretch;

}

/*----------------------------------------------------------
    CARD
----------------------------------------------------------*/

.testimonial-card{

    position:relative;

    display:flex;

    flex-direction:column;

    height:100%;

    padding:2rem;

    overflow:hidden;

    border-radius:24px;

    background:var(--bg-card);

    border:1px solid var(--border-color);

    backdrop-filter:blur(20px);

    transition:
        transform .35s ease,
        border-color .35s ease,
        box-shadow .35s ease;

}

.testimonial-card::before{

    content:"";

    position:absolute;

    inset:0;

    background:
    linear-gradient(
        135deg,
        rgba(100,255,218,.05),
        transparent 65%
    );

    pointer-events:none;

}

.testimonial-card:hover{

    transform:translateY(-8px);

    border-color:var(--border-hover);

    box-shadow:var(--shadow-card);

}

.testimonial-card__quote{

    font-size:2.6rem;

    color:var(--accent-primary);

    opacity:.25;

    margin-bottom:1rem;

}

.testimonial-card__rating{

    display:flex;

    gap:.35rem;

    margin-bottom:1.25rem;

    color:#FFD166;

}

.testimonial-card__message{

    flex:1;

    line-height:1.9;

    color:var(--text-secondary);

    margin-bottom:2rem;

}

.testimonial-card__footer{

    margin-top:auto;

    display:flex;

    align-items:center;

    gap:1rem;

}

.testimonial-card__avatar{

    width:72px;

    height:72px;

    border-radius:50%;

    object-fit:cover;

    border:3px solid rgba(100,255,218,.18);

    flex-shrink:0;

}

.testimonial-card__info{

    flex:1;

}

.testimonial-card__name{

    font-size:1.1rem;

    font-weight:700;

    color:var(--text-primary);

    margin-bottom:.2rem;

}

.testimonial-card__designation{

    font-size:.95rem;

    color:var(--accent-primary);

    margin-bottom:.2rem;

}

.testimonial-card__company{

    font-size:.9rem;

    color:var(--text-tertiary);

}

.testimonial-card__linkedin{

    width:46px;

    height:46px;

    display:flex;

    align-items:center;

    justify-content:center;

    border-radius:50%;

    color:var(--accent-primary);

    border:1px solid var(--border-color);

    transition:all .3s ease;

}

.testimonial-card__linkedin:hover{

    color:var(--bg-primary);

    background:var(--accent-primary);

    border-color:var(--accent-primary);

}

/*----------------------------------------------------------
    SWIPER
----------------------------------------------------------*/

.testimonials-carousel{

    width:100%;

    overflow:hidden;

}

.testimonials-carousel .swiper-wrapper{

    align-items:stretch;

}

.testimonials-carousel .swiper-slide{

    display:flex;

    height:auto;

}

.testimonials-carousel .testimonial-card{

    width:100%;

}

/*----------------------------------------------------------
    PAGINATION
----------------------------------------------------------*/

.swiper-pagination{

    position:relative;

    margin-top:2rem;

}

.swiper-pagination-bullet{

    width:10px;

    height:10px;

    opacity:.35;

    background:var(--accent-primary);

    transition:all .3s ease;

}

.swiper-pagination-bullet-active{

    opacity:1;

    transform:scale(1.25);

}

/*----------------------------------------------------------
    NAVIGATION
----------------------------------------------------------*/

.swiper-button-prev,
.swiper-button-next{

    width:46px;

    height:46px;

    border-radius:50%;

    background:var(--bg-secondary);

    border:1px solid var(--border-color);

    box-shadow:var(--shadow-md);

    color:var(--accent-primary);

}

.swiper-button-prev::after,
.swiper-button-next::after{

    font-size:16px;

    font-weight:700;

}

.swiper-button-prev:hover,
.swiper-button-next:hover{

    background:var(--accent-primary);

    color:var(--bg-primary);

}

/*----------------------------------------------------------
    RESPONSIVE
----------------------------------------------------------*/

@media (max-width:768px){

    .testimonials-grid{

        grid-template-columns:1fr;

    }

    .testimonial-card{

        padding:1.6rem;

    }

    .swiper-button-prev,
    .swiper-button-next{

        display:none;

    }

}
/* ============================================================
 * 14. PROJECTS
 * ============================================================ */

.projects__filters {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-2) var(--space-5);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

.filter-btn.active {
  color: var(--bg-primary);
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.project-card__image {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--bg-tertiary);
}

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

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

.project-card__status {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: var(--space-1) var(--space-3);
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-xl);
  background: rgba(10, 25, 47, 0.85);
  backdrop-filter: blur(8px);
}

.project-card__status--completed {
  color: var(--accent-primary);
  border: 1px solid rgba(100, 255, 218, 0.3);
}

.project-card__status--in-progress {
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.project-card__body {
  padding: var(--space-5);
}

.project-card__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.project-card__desc {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.project-tag {
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-primary);
  background: rgba(100, 255, 218, 0.06);
  border-radius: var(--radius-sm);
}

.project-card__links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
}

.project-link:hover {
  color: var(--accent-primary);
}

.project-card__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  font-size: var(--fs-3xl);
}

/* ============================================================
 * 15. EDUCATION
 * ============================================================ */

.education__grid {
  display: grid;
  gap: var(--space-6);
  max-width: 800px;
  margin-inline: auto;
}

.education-card {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  position: relative;
}

.education-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.education-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: rgba(100, 255, 218, 0.08);
  color: var(--accent-primary);
  border-radius: var(--radius-md);
  font-size: var(--fs-xl);
  flex-shrink: 0;
}

.education-card__content {
  flex: 1;
}

.education-card__degree {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.education-card__institute {
  font-size: var(--fs-sm);
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.education-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.education-card__meta-item {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.education-card__desc {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  line-height: 1.7;
}

.education-card__badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  padding: var(--space-1) var(--space-3);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent-primary);
  background: rgba(100, 255, 218, 0.08);
  border: 1px solid rgba(100, 255, 218, 0.2);
  border-radius: var(--radius-xl);
}

/* ============================================================
 * 16. CERTIFICATES
 * ============================================================ */

.certificates__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.certificate-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.certificate-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.certificate-card__image {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: var(--bg-tertiary);
}

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

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

.certificate-card__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--text-muted);
  font-size: var(--fs-3xl);
}

.certificate-card__body {
  padding: var(--space-4);
}

.certificate-card__title {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.certificate-card__issuer {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
}

.certificate-card__date {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* ============================================================
 * 17. VISION
 * ============================================================ */

.vision {
  background: var(--bg-secondary);
}

.vision__card {
  max-width: 800px;
  margin-inline: auto;
  padding: var(--space-9);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.vision__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
}

.vision__title {
  font-size: var(--fs-2xl);
  font-weight: 800;
  margin-bottom: var(--space-5);
}

.vision__statement {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--space-7);
}

.vision__highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  text-align: left;
}

.vision__highlight {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.vision__highlight-icon {
  color: var(--accent-primary);
  font-size: var(--fs-md);
  flex-shrink: 0;
}

.vision__highlight-text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================================
 * 18. CONTACT
 * ============================================================ */

.contact__description {
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  font-size: var(--fs-md);
  color: var(--text-tertiary);
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

.contact__cards {
  display: grid;
  gap: var(--space-4);
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  color: var(--text-secondary);
}

.contact-card:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
  box-shadow: var(--shadow-glow);
  color: var(--text-primary);
}

.contact-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(100, 255, 218, 0.08);
  color: var(--accent-primary);
  border-radius: var(--radius-md);
  font-size: var(--fs-lg);
  flex-shrink: 0;
}

.contact-card__title {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact-card__value {
  font-size: var(--fs-sm);
  color: inherit;
  font-weight: 500;
}

.contact__form-wrapper {
  padding: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.contact-form {
  display: grid;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group__label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group__input,
.form-group__textarea {
  padding: var(--space-3) var(--space-4);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group__input:focus,
.form-group__textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
}

.form-group__input::placeholder,
.form-group__textarea::placeholder {
  color: var(--text-muted);
}

.form-group__textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form__submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--accent-primary);
  color: var(--bg-primary);
  font-size: var(--fs-sm);
  font-weight: 600;
  border: 2px solid var(--accent-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.contact-form__submit:hover {
  background: transparent;
  color: var(--accent-primary);
  transform: translateY(-2px);
}

/* --- Per-field validation errors --- */

.form-group__error {
  font-size: var(--fs-xs);
  color: #ff6b6b;
  min-height: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--transition-base), opacity var(--transition-base),
              margin var(--transition-base);
}

.form-group__error--visible {
  min-height: auto;
  max-height: 40px;
  opacity: 1;
  margin-top: var(--space-1);
}

.form-group__input--error,
.form-group__textarea.form-group__input--error {
  border-color: #ff6b6b;
  box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

/* --- Honeypot (hidden from real users) --- */

.form-group--hp {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  tab-index: -1;
}

/* --- Submit button states --- */

.contact-form__submit:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.contact-form__submit--sending {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.contact-form__submit--sending:hover {
  transform: none;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.contact-form__submit--success {
  background: rgba(100, 255, 218, 0.15);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.contact-form__submit--success:hover {
  transform: none;
  background: rgba(100, 255, 218, 0.15);
  color: var(--accent-primary);
}

.contact-form__submit--error {
  background: rgba(255, 107, 107, 0.1);
  border-color: #ff6b6b;
  color: #ff6b6b;
}

.contact-form__submit--error:hover {
  background: rgba(255, 107, 107, 0.15);
  color: #ff6b6b;
  transform: translateY(-2px);
}

/* --- Toast notifications --- */

.toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--fs-sm);
  font-weight: 500;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), transform var(--transition-base),
              visibility var(--transition-base);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  max-width: min(500px, 90vw);
}

.toast--visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.toast--success {
  background: rgba(17, 34, 64, 0.95);
  color: var(--accent-primary);
  border: 1px solid rgba(100, 255, 218, 0.25);
}

.toast--error {
  background: rgba(17, 34, 64, 0.95);
  color: #ff6b6b;
  border: 1px solid rgba(255, 107, 107, 0.25);
}

.toast i {
  font-size: var(--fs-lg);
  flex-shrink: 0;
}

/* --- Form status (kept for backward compat) --- */

.form-status {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 500;
  text-align: center;
  display: none;
}

.form-status--success {
  display: block;
  background: rgba(100, 255, 218, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(100, 255, 218, 0.2);
}

.form-status--error {
  display: block;
  background: rgba(255, 107, 107, 0.1);
  color: #ff6b6b;
  border: 1px solid rgba(255, 107, 107, 0.2);
}

/* ============================================================
 * 19. FOOTER
 * ============================================================ */

.footer {
  padding-block: var(--space-8);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.footer__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copyright {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
}

.footer__tagline {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: var(--space-1);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--fs-md);
  transition: all var(--transition-base);
}

.footer__social-link:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* ============================================================
 * 20. BACK TO TOP
 * ============================================================ */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--accent-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--fs-md);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

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

.back-to-top:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
  transform: translateY(-3px);
}

/* ============================================================
 * 21. MODAL
 * ============================================================ */

.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal[hidden] {
  display: none;
}

.modal.active {
  display: flex;
  opacity: 1;
  visibility: visible;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
}

.modal__content {
  position: relative;
  max-width: 700px;
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transform: scale(0.9);
  transition: transform var(--transition-base);
}

.modal.active .modal__content {
  transform: scale(1);
}

.modal__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  font-size: var(--fs-md);
  z-index: var(--z-base);
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.modal__image {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  background: var(--bg-tertiary);
}

.modal__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  padding: var(--space-4) var(--space-5) var(--space-1);
}

.modal__issuer {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  padding: 0 var(--space-5) var(--space-5);
}

/* ============================================================
 * 22. SCROLL REVEAL ANIMATIONS
 * ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
 * 23. RESPONSIVE — Tablet (max-width: 1024px)
 * ============================================================ */

@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-7);
  }

  .hero__text {
    order: 2;
  }

  .hero__image {
    order: 1;
  }

  .hero__tagline {
    margin-inline: auto;
  }

  .hero__cta {
    justify-content: center;
  }

  .hero__social {
    justify-content: center;
  }

  .hero__image-wrapper {
    width: 280px;
    height: 280px;
  }

  .about__content {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }

  .about__image {
    display: flex;
    justify-content: center;
  }

  .about__image-wrapper {
    max-width: 300px;
  }

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact__content {
    grid-template-columns: 1fr;
  }

  .vision__highlights {
    grid-template-columns: 1fr;
  }

  .certificates__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .navbar__btn--menu {
    display: flex;
  }

  .navbar__menu {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-8);
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: var(--z-dropdown);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.3);
  }

  .navbar__menu.open {
    transform: translateX(0);
  }

  .navbar__link {
    font-size: var(--fs-lg);
    padding: var(--space-3) var(--space-4);
    width: 100%;
    justify-content: flex-start;
  }

  .navbar__link.active::after {
    display: none;
  }
}

/* ============================================================
 * 24. RESPONSIVE — Mobile (max-width: 768px)
 * ============================================================ */

@media (max-width: 768px) {
  .container {
    padding-inline: var(--space-4);
  }

  .section {
    padding-block: var(--space-9);
  }

  .hero__image-wrapper {
    width: 220px;
    height: 220px;
  }

  .hero__image-dots {
    display: none;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .stat-card {
    padding: var(--space-4);
  }

  .stat-card__value {
    font-size: var(--fs-2xl);
  }

  .about__details {
    grid-template-columns: 1fr;
  }

  .about__values {
    grid-template-columns: 1fr;
  }

  .skills__grid {
    grid-template-columns: 1fr;
  }

  .projects__grid {
    grid-template-columns: 1fr;
  }

  .certificates__grid {
    grid-template-columns: 1fr;
  }

  .footer__container {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .vision__card {
    padding: var(--space-6);
  }

  .journey__timeline {
    padding-left: var(--space-7);
  }

  .timeline-item__dot {
    left: calc(-1 * var(--space-7) + 12px);
  }

  .journey__timeline::before {
    left: 14px;
  }
}

/* ============================================================
 * 25. RESPONSIVE — Small Mobile (max-width: 480px)
 * ============================================================ */

@media (max-width: 480px) {
  .hero {
    min-height: auto;
    padding-block: calc(var(--navbar-height) + var(--space-8)) var(--space-8);
  }

  .hero__name {
    font-size: var(--fs-2xl);
  }

  .hero__title {
    font-size: var(--fs-lg);
  }

  .hero__cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero__image-wrapper {
    width: 180px;
    height: 180px;
  }

  .navbar__btn--cv span {
    display: none;
  }

  .education-card {
    flex-direction: column;
  }

  .education-card__icon {
    width: 48px;
    height: 48px;
  }

  .section__title {
    font-size: var(--fs-xl);
  }
}

/* ============================================================
 * 26. 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-left,
  .reveal-right {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
 * 27. PRINT STYLES
 * ============================================================ */

@media print {
  .navbar,
  .back-to-top,
  .loader,
  .hero__bg,
  .modal {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .section {
    break-inside: avoid;
    padding-block: 1rem;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}