/* ==========================================================================
   AI Product Studio — Component Library
   components.css  |  Version 1.0.0
   Depends on: tokens.css
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ==========================================================================
   RESET & BASE
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-base);
  min-height: 100vh;
}

img, video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* ==========================================================================
   LAYOUT — Container
   ========================================================================== */

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

@media (min-width: 768px) {
  .container {
    padding-inline: var(--container-px-md);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--container-px-lg);
  }
}

.container--narrow {
  max-width: var(--container-lg);
}

.container--wide {
  max-width: var(--container-2xl);
}

/* ==========================================================================
   LAYOUT — Section
   ========================================================================== */

.section {
  padding-block: var(--section-py-sm);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--section-py);
  }
}

@media (min-width: 1280px) {
  .section {
    padding-block: var(--section-py-lg);
  }
}

.section--surface {
  background-color: var(--color-bg-surface);
}

.section--elevated {
  background-color: var(--color-bg-elevated);
}

/* ==========================================================================
   TYPOGRAPHY — Headings
   ========================================================================== */

.heading-display {
  font-size: clamp(var(--text-4xl), 6vw, var(--text-7xl));
  font-weight: var(--font-bold);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.heading-1 {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.heading-2 {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-snug);
}

.heading-3 {
  font-size: clamp(var(--text-xl), 2vw, var(--text-2xl));
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
}

.heading-4 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-accent   { color: var(--color-text-accent); }
.text-muted    { color: var(--color-text-muted); }
.text-secondary{ color: var(--color-text-secondary); }

.label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-accent);
}

.overline {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ==========================================================================
   TYPOGRAPHY — Body
   ========================================================================== */

.body-lg {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.body-base {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.body-sm {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

/* ==========================================================================
   COMPONENT — Button
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: 1;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent-500);
  outline-offset: 2px;
}

/* Primary */
.btn--primary {
  background: var(--color-accent-500);
  color: var(--color-text-inverse);
  border-color: var(--color-accent-600);
}

.btn--primary:hover {
  background: var(--color-accent-600);
  transform: translateY(-1px);
}

.btn--primary:active {
  transform: translateY(0);
}

/* Secondary */
.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-elevated);
}

.btn--secondary:hover {
  border-color: var(--color-border-accent);
  background-color: var(--color-bg-surface);
  color: var(--color-text-accent);
}

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

.btn--ghost:hover {
  color: var(--color-text-primary);
  background-color: rgba(0,0,0,0.04);
}

/* Highlight (warm neutral) */
.btn--highlight {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.btn--highlight:hover {
  background: var(--color-bg-surface);
  transform: translateY(-1px);
}

/* Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

.btn--icon {
  padding: var(--space-3);
  aspect-ratio: 1;
}

/* ==========================================================================
   COMPONENT — Badge / Tag
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1-5);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  font-family: var(--font-sans);
  border-radius: var(--radius-full);
  border: 1px solid;
  line-height: 1;
  white-space: nowrap;
}

.badge--accent {
  background: rgba(0,0,0,0.06);
  color: var(--color-accent-500);
  border-color: rgba(0,0,0,0.12);
}

.badge--highlight {
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  border-color: var(--color-border-default);
}

/* Pastel accent badges */
.badge--sage {
  background: #D4E8C2;
  color: #2D5016;
  border-color: rgba(100,160,50,0.25);
}

.badge--peach {
  background: #F5D5C0;
  color: #7A3A1E;
  border-color: rgba(200,100,60,0.25);
}

.badge--sky {
  background: #C2D9F0;
  color: #1A3F6A;
  border-color: rgba(50,120,200,0.25);
}

.badge--yellow {
  background: #F5EAC2;
  color: #6A4A00;
  border-color: rgba(200,160,30,0.25);
}

.badge--muted {
  background: rgba(0,0,0,0.04);
  color: var(--color-text-secondary);
  border-color: var(--color-border-default);
}

.badge--success {
  background: rgba(16,185,129,0.08);
  color: #059669;
  border-color: rgba(16,185,129,0.20);
}

.badge--warning {
  background: rgba(245,158,11,0.08);
  color: #D97706;
  border-color: rgba(245,158,11,0.20);
}

.badge--dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: currentColor;
  flex-shrink: 0;
}

/* ==========================================================================
   COMPONENT — Card
   ========================================================================== */

.card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  position: relative;
  transition: var(--transition-normal);
}

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

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

.card__media {
  aspect-ratio: 16 / 9;
  background: var(--color-bg-elevated);
  overflow: hidden;
  position: relative;
}

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

.card:hover .card__media img {
  transform: scale(1.03);
}

/* Project Card */
.card--project .card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

.card--project .card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}

.card--project .card__description {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.card--project .card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-default);
  margin-top: auto;
}

.card--project .card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-accent);
  transition: var(--transition-fast);
}

.card--project .card__cta:hover {
  gap: var(--space-3);
  color: var(--color-accent-300);
}

/* Stat Card */
.card--stat {
  background: var(--color-bg-elevated);
  border-color: var(--color-border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
}

.card--stat .card__value {
  font-size: clamp(var(--text-3xl), 3vw, var(--text-4xl));
  font-weight: var(--font-bold);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: var(--leading-none);
  margin-bottom: var(--space-2);
}

.card--stat .card__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--font-medium);
}

/* Feature Card */
.card--feature {
  background: var(--color-bg-elevated);
  border-color: var(--color-border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.card--feature:hover {
  border-color: var(--color-border-accent);
  background: linear-gradient(135deg, var(--color-bg-elevated) 0%, rgba(0,0,0,0.02) 100%);
}

.card--feature .card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: rgba(0,0,0,0.06);
  border: 1px solid rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.card--feature .card__icon--highlight {
  background: var(--color-bg-surface);
  border-color: var(--color-border-default);
}

.card--feature .card__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

.card--feature .card__description {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* Testimonial Card */
.card--testimonial {
  background: var(--color-bg-elevated);
  border-color: var(--color-border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
}

.card--testimonial .card__quote {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: var(--space-6);
}

.card--testimonial .card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.card--testimonial .card__avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--gradient-hero);
  flex-shrink: 0;
  overflow: hidden;
}

.card--testimonial .card__author-name {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

.card--testimonial .card__author-role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ==========================================================================
   COMPONENT — Navigation
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background-color var(--duration-normal) var(--ease-in-out),
              border-color var(--duration-normal) var(--ease-in-out),
              backdrop-filter var(--duration-normal) var(--ease-in-out);
}

.nav--scrolled {
  background-color: var(--color-bg-overlay);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--color-border-default);
  box-shadow: var(--shadow-sm);
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-snug);
}

.nav__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-lg);
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: var(--font-bold);
  color: white;
  flex-shrink: 0;
  box-shadow: var(--shadow-glow-sm);
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-text-primary);
  background-color: rgba(0,0,0,0.05);
}

.nav__link--active {
  color: var(--color-text-accent);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile Menu Toggle */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

@media (min-width: 768px) {
  .nav__hamburger {
    display: none;
  }
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: var(--transition-normal);
}

/* Mobile Menu */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height-mobile);
  left: 0;
  right: 0;
  background: var(--color-bg-overlay);
  backdrop-filter: blur(16px) saturate(200%);
  -webkit-backdrop-filter: blur(16px) saturate(200%);
  border-bottom: 1px solid var(--color-border-default);
  box-shadow: var(--shadow-md);
  padding: var(--space-4);
  flex-direction: column;
  gap: var(--space-1);
  z-index: var(--z-nav);
}

.nav__mobile--open {
  display: flex;
}

.nav__mobile .nav__link {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-4);
}

/* ==========================================================================
   COMPONENT — Hero Section
   ========================================================================== */

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

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: var(--z-below);
}

.hero__glow-primary {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: var(--gradient-glow-radial);
  pointer-events: none;
}

.hero__glow-secondary {
  position: absolute;
  top: 40%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,0,0,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 0%, transparent 100%);
}

.hero__inner {
  position: relative;
  z-index: var(--z-base);
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.hero__content {
  max-width: 640px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-size: clamp(var(--text-4xl), 6vw, var(--text-7xl));
  font-weight: var(--font-bold);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.hero__description {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero__social-proof {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.hero__avatars {
  display: flex;
}

.hero__avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg-base);
  background: var(--gradient-hero);
  margin-right: -8px;
  overflow: hidden;
}

.hero__social-proof-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.hero__social-proof-text strong {
  color: var(--color-text-secondary);
  font-weight: var(--font-semibold);
}

/* Hero Visual / Dashboard Preview */
.hero__visual {
  position: relative;
  display: none;
}

@media (min-width: 1024px) {
  .hero__visual {
    display: block;
  }
}

/* ==========================================================================
   COMPONENT — Section Header
   ========================================================================== */

.section-header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}

.section-header--left {
  text-align: left;
  margin-inline: 0;
}

.section-header__eyebrow {
  margin-bottom: var(--space-4);
}

.section-header__title {
  margin-bottom: var(--space-4);
}

.section-header__description {
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   COMPONENT — Grid Layouts
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--space-6);
}

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

.grid--3 {
  grid-template-columns: repeat(1, 1fr);
}

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

@media (min-width: 640px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Masonry-style project grid */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-grid__featured {
    grid-column: span 2;
  }
}

@media (min-width: 1280px) {
  .project-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .project-grid__featured {
    grid-column: span 2;
  }
}

/* ==========================================================================
   COMPONENT — Divider
   ========================================================================== */

.divider {
  border: none;
  border-top: 1px solid var(--color-border-default);
}

.divider--glow {
  border: none;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--color-accent-500) 30%,
    var(--color-highlight-500) 70%,
    transparent 100%
  );
  opacity: 0.4;
}

/* ==========================================================================
   COMPONENT — Code Block
   ========================================================================== */

.code-block {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-default);
  background: var(--color-bg-elevated);
}

.code-block__dots {
  display: flex;
  gap: var(--space-2);
}

.code-block__dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
}

.code-block__dot:nth-child(1) { background: #FF5F57; }
.code-block__dot:nth-child(2) { background: #FEBC2E; }
.code-block__dot:nth-child(3) { background: #28C840; }

.code-block__lang {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  font-weight: var(--font-medium);
}

.code-block__body {
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
  overflow-x: auto;
}

.code-block__body .token-keyword  { color: var(--color-accent-300); }
.code-block__body .token-string   { color: var(--color-highlight-300); }
.code-block__body .token-comment  { color: var(--color-text-muted); font-style: italic; }
.code-block__body .token-function { color: #FCA5A5; }
.code-block__body .token-number   { color: #FCD34D; }

/* ==========================================================================
   COMPONENT — Input / Form
   ========================================================================== */

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

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
}

.form-input,
.form-textarea {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  transition: border-color var(--duration-normal) var(--ease-in-out),
              box-shadow var(--duration-normal) var(--ease-in-out);
  width: 100%;
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-accent-500);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.08);
}

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

/* ==========================================================================
   COMPONENT — Tag List (technology tags)
   ========================================================================== */

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ==========================================================================
   COMPONENT — Progress / Timeline
   ========================================================================== */

.timeline {
  position: relative;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, var(--color-accent-500), var(--color-highlight-500), transparent);
  opacity: 0.4;
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-8);
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(var(--space-8) * -1 + 7px);
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-accent-500);
  box-shadow: 0 0 8px rgba(0,0,0,0.15);
}

.timeline__date {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-accent);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-1);
}

.timeline__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.timeline__description {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* ==========================================================================
   COMPONENT — Avatar
   ========================================================================== */

.avatar {
  border-radius: var(--radius-full);
  overflow: hidden;
  flex-shrink: 0;
}

.avatar--sm  { width: 32px;  height: 32px; }
.avatar--md  { width: 48px;  height: 48px; }
.avatar--lg  { width: 64px;  height: 64px; }
.avatar--xl  { width: 80px;  height: 80px; }
.avatar--2xl { width: 120px; height: 120px; }

.avatar--gradient {
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-bold);
  color: white;
}

/* ==========================================================================
   COMPONENT — Tooltip
   ========================================================================== */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-primary);
  font-size: var(--text-xs);
  padding: var(--space-1-5) var(--space-3);
  border-radius: var(--radius-md);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-out);
  box-shadow: var(--shadow-md);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
  opacity: 1;
}

/* ==========================================================================
   COMPONENT — Pill Navigation / Tabs
   ========================================================================== */

.tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-1);
}

.tab {
  flex: 1;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
  text-align: center;
  cursor: pointer;
}

.tab:hover {
  color: var(--color-text-primary);
  background: rgba(0,0,0,0.04);
}

.tab--active {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   COMPONENT — Stats Row
   ========================================================================== */

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--color-border-default);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-2xl);
  overflow: hidden;
}

@media (min-width: 768px) {
  .stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stats__item {
  background: var(--color-bg-surface);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition: background-color var(--duration-normal) var(--ease-in-out);
}

.stats__item:hover {
  background: var(--color-bg-elevated);
}

.stats__value {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: var(--font-bold);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: var(--leading-tight);
  display: block;
  margin-bottom: var(--space-2);
}

.stats__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--font-medium);
}

/* ==========================================================================
   COMPONENT — CTA Banner
   ========================================================================== */

.cta-banner {
  position: relative;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-3xl);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  text-align: center;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero-subtle);
  z-index: var(--z-below);
}

.cta-banner__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 300px;
  background: var(--gradient-glow-accent);
  pointer-events: none;
  z-index: var(--z-below);
}

.cta-banner__content {
  position: relative;
  z-index: var(--z-base);
  max-width: 560px;
  margin-inline: auto;
}

.cta-banner__title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
  letter-spacing: var(--tracking-tight);
}

.cta-banner__description {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.cta-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

/* ==========================================================================
   COMPONENT — Footer
   ========================================================================== */

.footer {
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border-default);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
  max-width: 260px;
}

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

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  transition: var(--transition-fast);
}

.footer__social-link:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-accent);
  background: var(--color-bg-surface);
}

.footer__col-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__link:hover {
  color: var(--color-text-secondary);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-default);
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ==========================================================================
   COMPONENT — Scroll Animations (CSS only, JS-enhanced)
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--duration-slower) var(--ease-out),
                transform var(--duration-slower) var(--ease-out);
  }

  .fade-up--visible {
    opacity: 1;
    transform: translateY(0);
  }

  .fade-in {
    opacity: 0;
    transition: opacity var(--duration-slower) var(--ease-out);
  }

  .fade-in--visible {
    opacity: 1;
  }

  .stagger-children > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
  }

  .stagger-children--visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0ms; }
  .stagger-children--visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 80ms; }
  .stagger-children--visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 160ms; }
  .stagger-children--visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 240ms; }
  .stagger-children--visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 320ms; }
  .stagger-children--visible > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 400ms; }
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

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

.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.items-center{ align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2       { gap: var(--space-2); }
.gap-4       { gap: var(--space-4); }
.gap-6       { gap: var(--space-6); }
.gap-8       { gap: var(--space-8); }

.mt-2  { margin-top: var(--space-2); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

.text-center { text-align: center; }
.w-full      { width: 100%; }
.max-w-prose { max-width: 65ch; }

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--color-accent-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Selection */
::selection {
  background: rgba(0,0,0,0.08);
  color: var(--color-text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-400);
}