/* css/premium.css — premium overlays, progressive enhancement */

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .stars,
  .star,
  #starfield-canvas,
  .cursor-particles,
  .custom-cursor {
    display: none !important;
  }
}

/* ---------- pointer gate: hide custom cursor on touch ---------- */
@media not all and (hover: hover) and (pointer: fine) {
  .custom-cursor,
  .cursor-particles {
    display: none !important;
  }
  body,
  a,
  button {
    cursor: auto !important;
  }
}

/* ---------- fluid typography ---------- */
:root {
  --step-0: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --step-1: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --step-2: clamp(1.375rem, 1.2rem + 0.9vw, 1.75rem);
  --step-3: clamp(1.75rem, 1.4rem + 1.8vw, 2.5rem);
  --step-4: clamp(2.25rem, 1.6rem + 3.2vw, 4rem);
  --step-5: clamp(2.75rem, 1.8rem + 5vw, 6rem);
  --step-hero: clamp(3rem, 2rem + 8vw, 9rem);
}

body { font-size: var(--step-0); line-height: 1.65; }

h1, .hero h1 { font-size: var(--step-hero); line-height: 0.95; letter-spacing: -0.02em; }
.section-title, h2 { font-size: var(--step-5); line-height: 1; letter-spacing: -0.01em; }
h3 { font-size: var(--step-3); line-height: 1.15; }
.profile-section h2 { font-size: var(--step-3); }
.profile-section p { font-size: var(--step-1); }

/* ---------- canvas starfield ---------- */
.intro { position: relative; }
#starfield-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}
.intro > :not(#starfield-canvas) { position: relative; z-index: 1; }

/* ---------- frosted-glass profile card ---------- */
.profile-section {
  background: var(--card-glass) !important;
  border: 1px solid var(--card-border) !important;
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow:
    0 1px 0 var(--card-highlight) inset,
    0 30px 60px -20px var(--card-shadow);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .profile-section {
    background: rgba(20, 20, 28, 0.85) !important;
  }
}

/* ---------- atmospheric noise overlay ---------- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: url('../assets/noise.svg');
  background-size: 300px 300px;
  opacity: var(--noise-opacity);
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 9997;
}
@media (prefers-reduced-motion: reduce) {
  body::after { opacity: 0; }
}

/* ---------- scroll-reactive nav ---------- */
.nav {
  transform: translateY(0) !important; /* override main.css translateY(-100%) default */
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s ease,
              backdrop-filter 0.3s ease,
              opacity 0.35s ease;
  will-change: transform;
}
/* Hidden during intro (before user scrolls past hero) */
.nav.nav--intro-hidden {
  opacity: 0;
  pointer-events: none;
}
/* Hidden on scroll-down */
.nav.nav--hidden { transform: translateY(-110%) !important; }
.nav.nav--scrolled {
  background: var(--nav-scrolled-bg);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

/* ---------- split-text reveal ---------- */
[data-split] {
  overflow: hidden;
}
[data-split] .word {
  display: inline-block;
  transform: translateY(110%);
  opacity: 0;
  will-change: transform, opacity;
}
[data-split].is-ready .word {
  transform: translateY(0);
  opacity: 1;
  transition:
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.9s ease;
}
[data-split].is-ready .word:nth-child(1) { transition-delay: 0.05s; }
[data-split].is-ready .word:nth-child(2) { transition-delay: 0.12s; }
[data-split].is-ready .word:nth-child(3) { transition-delay: 0.19s; }
[data-split].is-ready .word:nth-child(4) { transition-delay: 0.26s; }
[data-split].is-ready .word:nth-child(5) { transition-delay: 0.33s; }
[data-split].is-ready .word:nth-child(6) { transition-delay: 0.40s; }
[data-split].is-ready .word:nth-child(7) { transition-delay: 0.47s; }
[data-split].is-ready .word:nth-child(n+8) { transition-delay: 0.54s; }

@media (prefers-reduced-motion: reduce) {
  [data-split] .word { transform: none !important; opacity: 1 !important; }
}

/* ---------- preloader ---------- */
html.is-loading { overflow: hidden; }
.preloader {
  position: fixed;
  inset: 0;
  background: var(--preloader-bg);
  z-index: 99999;
  display: grid;
  place-items: center;
  transition: transform 0.9s cubic-bezier(0.76, 0, 0.24, 1), opacity 0.3s ease 0.9s;
}
.preloader__bar {
  width: min(280px, 60vw);
  height: 2px;
  background: rgba(255, 204, 0, 0.25);
  position: relative;
  overflow: hidden;
}
.preloader__bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: #ffcc00;
  transform: scaleX(0);
  transform-origin: left;
  animation: pl 0.6s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}
@keyframes pl { to { transform: scaleX(1); } }
.preloader.is-gone { transform: translateY(-100%); opacity: 0; pointer-events: none; }

@media (prefers-reduced-motion: reduce) {
  .preloader { transition: opacity 0.2s ease; }
  .preloader__bar::after { animation-duration: 0.2s; }
}

/* ---------- layout fix: remove dead gap below intro ---------- */
.main-content {
  margin-top: 0 !important;
}
.hero {
  padding-top: 2rem !important;
}

/* ---------- profile card buttons: allow wrapping ---------- */
.profile-buttons .cta-button,
.profile-buttons .contact-button {
  white-space: normal !important;
  line-height: 1.2;
  word-break: normal;
  hyphens: none;
}

/* ---------- push-to-9 polish ---------- */
:root {
  --accent-muted: #c9a84c;

  /* Theme-aware tokens — dark defaults */
  --bg-color: #0a0a0a;
  --text-color: #f8f8f8;
  --heading-color: #ffffff;
  --secondary-text: #e0e0e0;
  --muted-text: #cccccc;
  --link-color: #ffcc00;
  --card-bg: rgba(0, 0, 0, 0.2);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-glass: rgba(255, 255, 255, 0.04);
  --card-shadow: rgba(0, 0, 0, 0.6);
  --card-highlight: rgba(255, 255, 255, 0.06);
  --noise-opacity: 0.035;
  --hero-gradient-from: #000000;
  --hero-gradient-to: #1a1a2e;
  --section-gradient-from: rgba(10, 10, 10, 1);
  --section-gradient-to: rgba(20, 20, 40, 1);
  --nav-scrolled-bg: rgba(10, 10, 10, 0.72);
  --preloader-bg: #0a0a0a;
  --selection-bg: #ffcc00;
  --selection-text: #000000;
}

/* ========== LIGHT THEME OVERRIDES ========== */
[data-theme="light"] {
  --primary-color: #b8860b;
  --accent-color: #d4a017;
  --accent-muted: #8B7355;
  --bg-color: #FAF8F5;
  --text-color: #2c2419;
  --heading-color: #1a1207;
  --secondary-text: #4a3f2f;
  --muted-text: #6b5e4b;
  --link-color: #b8860b;
  --card-bg: rgba(255, 248, 240, 0.5);
  --card-border: rgba(139, 115, 85, 0.15);
  --card-glass: rgba(255, 255, 255, 0.6);
  --card-shadow: rgba(139, 115, 85, 0.15);
  --card-highlight: rgba(255, 255, 255, 0.8);
  --noise-opacity: 0.02;
  --hero-gradient-from: #FAF8F5;
  --hero-gradient-to: #F0EBE3;
  --section-gradient-from: #FAF8F5;
  --section-gradient-to: #F5EFE6;
  --nav-scrolled-bg: rgba(250, 248, 245, 0.85);
  --preloader-bg: #FAF8F5;
  --selection-bg: #b8860b;
  --selection-text: #FAF8F5;
}

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

/* Playfair Display for editorial headings */
.section-title, h2:not(.profile-section h2) {
  font-family: 'Playfair Display', serif;
}

/* dvh hero with fallback */
.intro {
  height: 100vh;
  height: 100dvh;
}

/* balanced headings */
h1, h2, h3 { text-wrap: balance; }

/* focus-visible rings */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 3px;
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 3px;
  border-radius: 4px;
}
input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 0;
}

/* screen-reader only utility */
.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;
}

/* ---------- skills filter pills ---------- */
.skills-filter {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.skills-pill {
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 0.45rem 1.2rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--step-0);
  color: var(--muted-text, #ccc);
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.skills-pill:hover {
  border-color: rgba(255, 204, 0, 0.4);
  color: #fff;
  transform: translateY(-2px);
}
.skills-pill.active {
  border-color: var(--primary-color, #ffcc00);
  color: #fff;
  background: rgba(255, 204, 0, 0.12);
  box-shadow: 0 0 20px -4px rgba(255, 204, 0, 0.25);
}

/* center single visible card when filtering */
.skills-section:has(.skills-category.is-hidden) {
  justify-items: center;
}
.skills-category:not(.is-hidden):only-of-type,
.skills-section:has(.skills-category.is-hidden) .skills-category:not(.is-hidden) {
  grid-column: 1 / -1;
  max-width: 600px;
}

/* ---------- premium skills cards ---------- */
.skills-category {
  background: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  backdrop-filter: blur(16px) saturate(140%) !important;
  -webkit-backdrop-filter: blur(16px) saturate(140%) !important;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 20px 40px -15px rgba(0, 0, 0, 0.5) !important;
  transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.16, 1, 0.3, 1) !important;
}
.skills-category.is-hidden {
  opacity: 0;
  transform: scale(0.96) translateY(10px);
  pointer-events: none;
  position: absolute;
  visibility: hidden;
}

/* ---------- skill chip stagger reveal ---------- */
.skill-item {
  opacity: 0;
  transform: translateY(12px) scale(0.95);
  transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.skills-category.chips-visible .skill-item {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.skills-category.chips-visible .skill-item:nth-child(1)  { transition-delay: 0.03s; }
.skills-category.chips-visible .skill-item:nth-child(2)  { transition-delay: 0.06s; }
.skills-category.chips-visible .skill-item:nth-child(3)  { transition-delay: 0.09s; }
.skills-category.chips-visible .skill-item:nth-child(4)  { transition-delay: 0.12s; }
.skills-category.chips-visible .skill-item:nth-child(5)  { transition-delay: 0.15s; }
.skills-category.chips-visible .skill-item:nth-child(6)  { transition-delay: 0.18s; }
.skills-category.chips-visible .skill-item:nth-child(7)  { transition-delay: 0.21s; }
.skills-category.chips-visible .skill-item:nth-child(8)  { transition-delay: 0.24s; }
.skills-category.chips-visible .skill-item:nth-child(9)  { transition-delay: 0.27s; }
.skills-category.chips-visible .skill-item:nth-child(10) { transition-delay: 0.30s; }
.skills-category.chips-visible .skill-item:nth-child(11) { transition-delay: 0.33s; }
.skills-category.chips-visible .skill-item:nth-child(12) { transition-delay: 0.36s; }
.skills-category.chips-visible .skill-item:nth-child(n+13) { transition-delay: 0.39s; }

@media (prefers-reduced-motion: reduce) {
  .skill-item { opacity: 1 !important; transform: none !important; transition: none !important; }
  .skills-category.is-hidden { opacity: 1 !important; transform: none !important; position: static !important; visibility: visible !important; }
}

/* ---------- lerp cursor override ---------- */
@media (hover: hover) and (pointer: fine) {
  .custom-cursor {
    transition: opacity 0.3s ease, width 0.3s ease, height 0.3s ease !important;
    /* transform handled by JS lerp — no CSS transition on transform */
  }
}

/* ---------- accent-muted usage ---------- */
.date { color: var(--accent-muted); }
.skill-item:hover { border-color: var(--accent-muted); }
.footer-links a { color: var(--accent-muted); }
.footer-links a:hover { color: var(--primary-color); }

/* ========== THEME TOGGLE BUTTON ========== */
.theme-toggle {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--primary-color, #ffcc00);
  font-size: 0.9rem;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
  margin-left: 1rem;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary-color, #ffcc00);
  transform: scale(1.1);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--primary-color, #ffcc00);
  outline-offset: 3px;
}

[data-theme="light"] .theme-toggle {
  border-color: rgba(139, 115, 85, 0.25);
  color: var(--primary-color);
}

[data-theme="light"] .theme-toggle:hover {
  background: rgba(184, 134, 11, 0.08);
  border-color: var(--primary-color);
}

/* Light mode nav scrolled override */
[data-theme="light"] .nav--scrolled {
  background: var(--nav-scrolled-bg);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

/* Light mode preloader */
[data-theme="light"] .preloader {
  background: var(--preloader-bg);
}

[data-theme="light"] .preloader__bar {
  background: rgba(184, 134, 11, 0.25);
}

[data-theme="light"] .preloader__bar::after {
  background: var(--primary-color);
}

/* Light mode selection */
[data-theme="light"] ::selection {
  background: var(--selection-bg);
  color: var(--selection-text);
}

/* Light mode intro text + logo readability */
[data-theme="light"] .intro-text {
  color: var(--heading-color) !important;
}
[data-theme="light"] .logo-svg {
  filter: brightness(0) invert(0) !important;
}
[data-theme="light"] .nav-logo {
  filter: brightness(0) !important;
}
[data-theme="light"] .footer-logo img {
  filter: brightness(0) !important;
}
[data-theme="light"] .profile-section h2,
[data-theme="light"] .profile-section p {
  color: var(--text-color);
}
[data-theme="light"] .content-block,
[data-theme="light"] .skills-category,
[data-theme="light"] .timeline-content {
  color: var(--text-color);
}
[data-theme="light"] .content-block h3,
[data-theme="light"] .skills-category h3,
[data-theme="light"] .timeline-content h3 {
  color: var(--heading-color);
}

/* ========== HORIZONTAL PROJECT SHOWCASE ========== */
.showcase-section {
  position: relative;
  padding: 6rem 0 0;
}
.showcase-pin {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2.5rem;
  padding: 2rem 0;
}
.showcase-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}
.showcase-sub {
  color: var(--muted-text, #ccc);
  font-size: var(--step-1);
  margin-top: 0.75rem;
  max-width: 48ch;
}
.showcase-track-wrap {
  overflow: hidden;
  width: 100%;
  padding-left: max(2rem, calc((100vw - 1200px) / 2));
}
.showcase-track {
  display: flex;
  gap: 2rem;
  will-change: transform;
  padding-right: 2rem;
}
.showcase-card {
  flex: 0 0 420px;
  min-height: 360px;
  padding: 2.2rem 2rem;
  border-radius: 18px;
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow:
    0 1px 0 var(--card-highlight) inset,
    0 30px 60px -20px var(--card-shadow);
  color: var(--text-color);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.35s ease;
}
.showcase-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-color);
}
.showcase-card-category {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-muted);
  margin-bottom: 1.5rem;
}
.showcase-card-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  line-height: 1.1;
  color: var(--heading-color);
  margin: 0 0 1rem;
}
.showcase-card-excerpt {
  color: var(--secondary-text);
  font-size: 1rem;
  line-height: 1.55;
  margin: 0 0 1.5rem;
  flex: 1;
}
.showcase-card-cta {
  color: var(--primary-color);
  font-size: 0.95rem;
  font-weight: 500;
  transition: transform 0.3s ease;
}
.showcase-card:hover .showcase-card-cta {
  transform: translateX(4px);
}
.showcase-progress {
  height: 2px;
  width: min(400px, 50%);
  margin: 0 auto;
  background: var(--card-border);
  border-radius: 2px;
  overflow: hidden;
}
.showcase-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--primary-color);
  transition: width 0.05s linear;
}

@media (max-width: 768px) {
  .showcase-section { padding-top: 3rem; }
  .showcase-pin { min-height: auto; }
  .showcase-track-wrap { overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; padding-left: 1.5rem; }
  .showcase-card { flex: 0 0 85vw; min-height: 300px; padding: 1.8rem 1.5rem; }
  .showcase-progress { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .showcase-track { transform: none !important; }
  .showcase-track-wrap { overflow-x: auto; }
  .showcase-pin { min-height: auto; }
}

/* ========== PAGE TRANSITIONS (View Transitions API) ========== */
@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 300ms;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

::view-transition-old(root) {
  animation-name: vt-fade-out;
}
::view-transition-new(root) {
  animation-name: vt-fade-in;
}

@keyframes vt-fade-out {
  to { opacity: 0; }
}
@keyframes vt-fade-in {
  from { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 0.001ms;
  }
}

/* ========== CURSOR-TRACKED GRADIENTS ========== */
.cta-button,
.skills-pill {
  position: relative;
  overflow: hidden;
  --mx: 50%;
  --my: 50%;
}

.cta-button::after,
.skills-pill::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: radial-gradient(circle 80px at var(--mx) var(--my),
    rgba(255, 204, 0, 0.35),
    transparent 60%);
  opacity: 0;
  transition: opacity 0.2s ease;
  mix-blend-mode: screen;
}

.cta-button.cursor-glow::after,
.skills-pill.cursor-glow::after {
  opacity: 1;
}

[data-theme="light"] .cta-button::after,
[data-theme="light"] .skills-pill::after {
  background: radial-gradient(circle 80px at var(--mx) var(--my),
    rgba(184, 134, 11, 0.25),
    transparent 60%);
  mix-blend-mode: multiply;
}