/* ============================================================
   TRIGEMEO STUDIO — style.css
   Cyber-Indie / Neo-Tactile Dark Theme
   Zero dependencies. Pure CSS3 + Custom Properties.
   ============================================================ */

/* ── 1. CSS Reset ──────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

input, button, textarea, select {
  font: inherit;
}

/* ── 2. CSS Custom Properties ──────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-body:       #08090f;
  --bg-primary:    #0a0c14;
  --bg-secondary:  #101322;
  --bg-card:       rgba(16, 19, 34, 0.72);
  --bg-glass:      rgba(255, 255, 255, 0.03);
  --bg-input:      rgba(255, 255, 255, 0.06);

  /* Accent Colors */
  --accent-cyan:    #06b6d4;
  --accent-indigo:  #6366f1;
  --accent-amber:   #f59e0b;
  --accent-emerald: #10b981;
  --accent-rose:    #f43f5e;

  /* Text */
  --text-primary:   #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted:     #475569;
  --text-heading:   #f1f5f9;

  /* Borders */
  --border-subtle:  rgba(255, 255, 255, 0.06);
  --border-card:    rgba(255, 255, 255, 0.08);
  --border-hover-indigo: rgba(99, 102, 241, 0.45);
  --border-hover-cyan:   rgba(6, 182, 212, 0.45);
  --border-hover-amber:  rgba(245, 158, 11, 0.45);

  /* Glows & Shadows */
  --glow-cyan:    0 0 24px rgba(6, 182, 212, 0.18);
  --glow-indigo:  0 0 24px rgba(99, 102, 241, 0.18);
  --glow-amber:   0 0 24px rgba(245, 158, 11, 0.18);
  --shadow-card:  0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg:    0 8px 48px rgba(0, 0, 0, 0.45);

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  --line-height:       1.65;
  --line-height-tight: 1.2;

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Border Radius */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out:      cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-base: 260ms;
  --duration-slow: 420ms;

  /* Layout */
  --container-max:    1200px;
  --container-narrow: 820px;
  --nav-height:       64px;
}

/* ── 3. Keyframe Animations ────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(99, 102, 241, 0.15); }
  50%      { box-shadow: 0 0 28px rgba(99, 102, 241, 0.4); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-14px) rotate(4deg); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(8px) scale(0.95); }
}

@keyframes heroGlow {
  0%, 100% { text-shadow: 0 0 40px rgba(6, 182, 212, 0.2); }
  50%       { text-shadow: 0 0 80px rgba(99, 102, 241, 0.3); }
}

/* ── 4. Base Styles ────────────────────────────────────────── */
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--text-primary);
  background-color: var(--bg-body);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(99, 102, 241, 0.35);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(99,102,241,0.4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-indigo); }

/* ── 5. Typography ─────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--text-heading);
  line-height: var(--line-height-tight);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p {
  color: var(--text-secondary);
  max-width: 68ch;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

strong { color: var(--text-primary); font-weight: 600; }

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: rgba(99,102,241,0.12);
  color: var(--accent-cyan);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
}

ul, ol {
  padding-left: var(--sp-5);
  color: var(--text-secondary);
}

li { margin-bottom: var(--sp-2); }

/* ── 6. Layout Utilities ───────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

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

.section {
  padding: var(--sp-20) 0;
}

.section--sm {
  padding: var(--sp-12) 0;
}

.section__header {
  margin-bottom: var(--sp-12);
}

.section__eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-indigo);
  margin-bottom: var(--sp-3);
  display: block;
}

.section__title {
  margin-bottom: var(--sp-4);
}

.section__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 56ch;
}

.grid {
  display: grid;
  gap: var(--sp-5);
}

.grid--2 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

/* ── 7. Navigation ─────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(8, 9, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--text-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.nav__logo:hover { opacity: 0.85; color: var(--text-heading); }

.nav__logo-img {
  width: 32px;
  height: 32px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-indigo);
  border-radius: 1px;
  transition: width var(--duration-base) var(--ease-out);
}

.nav__links a:hover { color: var(--text-primary); }
.nav__links a:hover::after { width: 100%; }

.nav__links a[aria-current="page"] {
  color: var(--text-primary);
}
.nav__links a[aria-current="page"]::after {
  width: 100%;
}

/* Burger Button */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav__burger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-base) var(--ease-out);
}

/* Mobile menu open state */
.nav--open .nav__burger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav--open .nav__burger-line:nth-child(2) {
  opacity: 0;
}
.nav--open .nav__burger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ── 8. Hero Section ───────────────────────────────────────── */
.hero {
  position: relative;
  padding: var(--sp-24) 0 var(--sp-20);
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center,
    rgba(99, 102, 241, 0.08) 0%,
    rgba(6, 182, 212, 0.05) 40%,
    transparent 70%);
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: var(--sp-5);
  padding: var(--sp-2) var(--sp-4);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.06);
  animation: fadeIn var(--duration-slow) var(--ease-out) 0.1s both;
}

.hero__title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--sp-5);
  animation: fadeInUp var(--duration-slow) var(--ease-out) 0.2s both;
}

.hero__title .text-gradient {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 60%, var(--accent-amber) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: heroGlow 4s ease-in-out infinite;
}

.hero__subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  margin: 0 auto var(--sp-4);
  max-width: 52ch;
  animation: fadeInUp var(--duration-slow) var(--ease-out) 0.3s both;
}

.hero__tagline {
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--sp-10);
  animation: fadeInUp var(--duration-slow) var(--ease-out) 0.4s both;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--sp-4);
  animation: fadeInUp var(--duration-slow) var(--ease-out) 0.5s both;
}

/* ── 9. Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              background var(--duration-base) var(--ease-out);
}

.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.45);
  color: #fff;
}

.btn--secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(8px);
}

.btn--secondary:hover {
  border-color: var(--border-hover-indigo);
  box-shadow: var(--glow-indigo);
  color: var(--text-primary);
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

/* ── 10. Cards ─────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  transition: border-color var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, transparent 60%);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-5px);
}

.card--cyan:hover {
  border-color: var(--border-hover-cyan);
  box-shadow: var(--glow-cyan), var(--shadow-card);
}

.card--indigo:hover {
  border-color: var(--border-hover-indigo);
  box-shadow: var(--glow-indigo), var(--shadow-card);
}

.card--amber:hover {
  border-color: var(--border-hover-amber);
  box-shadow: var(--glow-amber), var(--shadow-card);
}

.card--emerald:hover {
  border-color: rgba(16,185,129,0.45);
  box-shadow: 0 0 24px rgba(16,185,129,0.15), var(--shadow-card);
}

.card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--sp-4);
  gap: var(--sp-3);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  transition: box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}

/* Colored icon variants — SVG inherits currentColor stroke */
.card__icon--cyan   { color: var(--accent-cyan);    background: rgba(6,182,212,0.08);   border-color: rgba(6,182,212,0.18); }
.card__icon--indigo { color: var(--accent-indigo);  background: rgba(99,102,241,0.08);  border-color: rgba(99,102,241,0.18); }
.card__icon--amber  { color: var(--accent-amber);   background: rgba(245,158,11,0.08);  border-color: rgba(245,158,11,0.18); }
.card__icon--emerald{ color: var(--accent-emerald); background: rgba(16,185,129,0.08);  border-color: rgba(16,185,129,0.18); }

/* Glow icon on card hover */
.card--cyan:hover   .card__icon--cyan    { box-shadow: 0 0 16px rgba(6,182,212,0.28);   border-color: rgba(6,182,212,0.45); }
.card--indigo:hover .card__icon--indigo  { box-shadow: 0 0 16px rgba(99,102,241,0.28);  border-color: rgba(99,102,241,0.45); }
.card--amber:hover  .card__icon--amber   { box-shadow: 0 0 16px rgba(245,158,11,0.28);  border-color: rgba(245,158,11,0.45); }
.card--emerald:hover .card__icon--emerald{ box-shadow: 0 0 16px rgba(16,185,129,0.28); border-color: rgba(16,185,129,0.45); }

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--sp-1);
  color: var(--text-heading);
}

.card__subtitle {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
}

.card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: none;
}

/* Fade-in animation via Intersection Observer */
.card.is-hidden {
  opacity: 0;
  transform: translateY(24px);
}

.card.is-visible {
  animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

/* ── 11. Badges ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge--coming-soon {
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.badge--in-dev {
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-indigo);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge--beta {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge--lab {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ── 12. Project Filter Tabs ───────────────────────────────── */
.tabs {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
  margin-bottom: var(--sp-8);
}

.tab {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
}

.tab:hover {
  border-color: var(--border-hover-indigo);
  color: var(--text-primary);
}

.tab--active {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.4);
  color: var(--accent-indigo);
}

/* Filtered card hidden state */
.project-card[hidden] {
  display: none;
}

/* ── 13. FAQ Accordion ─────────────────────────────────────── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.faq-group__title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-indigo);
  margin: var(--sp-8) 0 var(--sp-4);
}

.faq-group__title:first-child {
  margin-top: 0;
}

.accordion-item {
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
  transition: border-color var(--duration-base) var(--ease-out);
}

.accordion-item:hover {
  border-color: var(--border-hover-indigo);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  transition: color var(--duration-fast) var(--ease-out);
}

.accordion-trigger:hover { color: var(--accent-cyan); }

.accordion-trigger__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--duration-base) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.accordion-item.is-open .accordion-trigger__icon {
  transform: rotate(45deg);
  color: var(--accent-indigo);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.accordion-panel__inner {
  padding: 0 var(--sp-5) var(--sp-5);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: none;
}

.accordion-panel__inner p { max-width: none; }
.accordion-panel__inner ul { margin-top: var(--sp-2); }

/* ── 14. Contact Cards ─────────────────────────────────────── */
.contact-card {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  position: relative;
}

.contact-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-card);
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-card__label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.contact-card__email {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-cyan);
  word-break: break-all;
}

.contact-card__copy {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.25);
  color: var(--accent-indigo);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  width: fit-content;
  transition: all var(--duration-fast) var(--ease-out);
}

.contact-card__copy:hover {
  background: rgba(99,102,241,0.2);
  border-color: rgba(99,102,241,0.5);
}

/* ── 15. Form ──────────────────────────────────────────────── */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.form__row {
  display: grid;
  gap: var(--sp-4);
  grid-template-columns: 1fr 1fr;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.form__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  border-color: rgba(99,102,241,0.5);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--text-muted);
}

.form__select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='%2394a3b8' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form__select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

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

.form__submit {
  align-self: flex-start;
}

/* ── 16. Support Page — Data Deletion ──────────────────────── */
.deletion-steps {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  counter-reset: steps;
}

.deletion-step {
  display: flex;
  gap: var(--sp-5);
  padding: var(--sp-5);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  align-items: flex-start;
}

.deletion-step__number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(99,102,241,0.15);
  border: 1px solid rgba(99,102,241,0.3);
  color: var(--accent-indigo);
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.deletion-step__content h4 {
  font-size: 0.95rem;
  margin-bottom: var(--sp-2);
}

.deletion-step__content p,
.deletion-step__content ul {
  font-size: 0.875rem;
  max-width: none;
}

/* ── 17. Philosophy / Manifesto ────────────────────────────── */
.philosophy {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.philosophy::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%,
    rgba(99,102,241,0.06) 0%, transparent 65%);
  pointer-events: none;
}

.philosophy__quote {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-primary);
  line-height: 1.7;
  font-style: italic;
  max-width: 66ch;
  position: relative;
}

.philosophy__quote::before {
  content: '"';
  font-size: 4rem;
  color: var(--accent-indigo);
  opacity: 0.3;
  line-height: 0;
  position: absolute;
  top: 0.6em;
  left: -0.5em;
  font-style: normal;
}

.philosophy__tagline {
  margin-top: var(--sp-6);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 0.02em;
  font-style: normal;
}

/* ── 18. Footer ────────────────────────────────────────────── */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--sp-12) 0 var(--sp-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-10);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--text-heading);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
}

.footer__logo:hover { color: var(--text-heading); opacity: 0.9; }

.footer__logo-img { width: 28px; height: 28px; }

.footer__tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 34ch;
}

.footer__nav-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--sp-4);
}

.footer__nav-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer__nav-list a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__nav-list a:hover { color: var(--accent-cyan); }

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.footer__legal {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: none;
}

/* ── 19. Legal Content Pages ───────────────────────────────── */
.legal-content {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: var(--sp-12) var(--sp-5);
}

.legal-content h1 {
  margin-bottom: var(--sp-2);
}

.legal-date {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--sp-10);
  display: block;
}

.legal-content h2 {
  font-size: 1.3rem;
  margin-top: var(--sp-10);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--border-subtle);
}

.legal-content h3 {
  font-size: 1rem;
  color: var(--accent-cyan);
  margin-top: var(--sp-6);
  margin-bottom: var(--sp-3);
}

.legal-content p {
  margin-bottom: var(--sp-4);
  color: var(--text-secondary);
  max-width: none;
}

.legal-content ul, .legal-content ol {
  margin-bottom: var(--sp-4);
}

.legal-content li {
  color: var(--text-secondary);
  margin-bottom: var(--sp-2);
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--sp-6) 0;
  font-size: 0.875rem;
}

.legal-content th {
  padding: var(--sp-3) var(--sp-4);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  text-align: left;
  border: 1px solid var(--border-card);
}

.legal-content td {
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.legal-content td a {
  font-size: 0.8rem;
}

/* ── 20. 404 Error Page ────────────────────────────────────── */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-height) - 200px);
  text-align: center;
  padding: var(--sp-16) var(--sp-5);
}

.error-page__logo {
  animation: float 4s ease-in-out infinite;
  margin-bottom: var(--sp-8);
  width: 80px;
  height: 80px;
}

.error-page__code {
  font-size: clamp(5rem, 15vw, 10rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--sp-3);
}

.error-page__title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: var(--sp-4);
}

.error-page__desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 44ch;
  margin: 0 auto var(--sp-8);
}

/* ── 21. Toast Notification ────────────────────────────────── */
.toast {
  position: fixed;
  bottom: var(--sp-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  background: var(--bg-secondary);
  border: 1px solid rgba(99,102,241,0.4);
  border-radius: var(--radius-full);
  padding: var(--sp-3) var(--sp-6);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-indigo);
  box-shadow: var(--shadow-lg), var(--glow-indigo);
  pointer-events: none;
  animation: toastIn 0.2s var(--ease-out) both;
}

.toast--out {
  animation: toastOut 0.2s var(--ease-out) both;
}

/* ── 22. Utility Classes ───────────────────────────────────── */
.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;
}

.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }

.text-gradient {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  /* Prevent last character clipping caused by negative letter-spacing + background-clip */
  padding-right: 0.06em;
}

.divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
  border-radius: var(--radius-full);
  margin: var(--sp-5) 0;
}

.notice-box {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.25);
  border-radius: var(--radius-md);
  padding: var(--sp-4) var(--sp-5);
  font-size: 0.875rem;
  color: var(--accent-amber);
  line-height: 1.6;
}

/* ── 23. Responsive ────────────────────────────────────────── */
@media (max-width: 639px) {
  .nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(8,9,15,0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--sp-5) var(--sp-5);
    gap: var(--sp-5);
  }

  .nav--open .nav__links {
    display: flex;
  }

  .nav {
    position: relative;
  }

  .nav__burger {
    display: flex;
  }

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

  .hero {
    padding: var(--sp-16) 0 var(--sp-12);
  }
}

@media (min-width: 640px) {
  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--sp-8);
  }

  .nav {
    position: sticky;
  }

  .nav__links {
    display: flex !important;
  }

  .nav__burger {
    display: none;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

@media (min-width: 1440px) {
  body {
    font-size: 1.05rem;
  }
}

/* ── 24. Support Page Layout ───────────────────────────────── */
.support-hero {
  padding: var(--sp-16) 0 var(--sp-12);
  text-align: center;
}

.support-hero__title {
  margin-bottom: var(--sp-4);
}

.support-hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 52ch;
  margin: 0 auto;
}

.support-section {
  padding: var(--sp-12) 0;
  border-top: 1px solid var(--border-subtle);
}

.support-section:first-of-type {
  border-top: none;
}

/* ── 25. Projects Page ─────────────────────────────────────── */
.projects-hero {
  padding: var(--sp-16) 0 var(--sp-10);
  text-align: center;
}

/* ── 26. Page Header ───────────────────────────────────────── */
.page-header {
  padding: var(--sp-16) 0 var(--sp-12);
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, rgba(99,102,241,0.04) 0%, transparent 100%);
}

.page-header__title {
  margin-bottom: var(--sp-3);
}

.page-header__subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 52ch;
}

/* ── 27. Polish: Visual Refinements ───────────────────────── */

/* 1. Nav active link: cyan for current page */
.nav__links a[aria-current="page"] {
  color: var(--accent-cyan);
}
.nav__links a[aria-current="page"]::after {
  background: var(--accent-cyan);
  width: 100%;
}

/* 2. Card accent top bar — thin colored stripe per variant */
.card--cyan    { border-top: 2px solid rgba(6,182,212,0.45); }
.card--indigo  { border-top: 2px solid rgba(99,102,241,0.45); }
.card--amber   { border-top: 2px solid rgba(245,158,11,0.45); }
.card--emerald { border-top: 2px solid rgba(16,185,129,0.45); }

/* 3. Hero subtitle: subtle letter-spacing for airiness */
.hero__subtitle {
  letter-spacing: 0.01em;
}

/* 4. Section title: faint left accent bar (non-centered headers) */
.section__header:not(.text-center) .section__title {
  position: relative;
  padding-left: 1.1rem;
}
.section__header:not(.text-center) .section__title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.15em;
  height: 0.85em;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-indigo));
  opacity: 0.75;
}

/* 5. Card icon micro-interaction: scale on card hover */
.card:hover .card__icon {
  transform: scale(1.1);
}
.card__icon {
  transition: box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}