/* ═══════════════════════════════════════════════════════════
   base.css
   Design tokens, CSS reset, typography, global utilities
   ═══════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────
   DESIGN TOKENS — CSS Custom Properties
   Edit these to retheme the entire site
   ───────────────────────────────────────────── */
:root {

  /* ══════════════════════════════════════════════════
     PREMIUM DARK NEUTRAL COLOR SYSTEM
     Inspired by Apple, Stripe, Linear, Awwwards
     ══════════════════════════════════════════════════ */

  /* ── BACKGROUNDS ─────────────────────────────────
     Four-step depth scale. Use deeper shades for
     content that should recede, elevated for cards
     that should feel raised off the surface.
  ───────────────────────────────────────────────── */
  --color-bg-primary:    #0D0D0F;   /* page base — true near-black    */
  --color-bg-secondary:  #15161A;   /* sections, alternating rows      */
  --color-bg-surface:    #1C1D22;   /* cards, panels, inputs           */
  --color-bg-elevated:   #22232A;   /* raised modals, tooltips, badges */

  /* Legacy aliases — keep every existing var() call working */
  --color-bg:         var(--color-bg-primary);
  --color-bg-2:       var(--color-bg-secondary);
  --color-bg-3:       var(--color-bg-surface);
  --color-surface:    var(--color-bg-surface);
  --color-surface-2:  var(--color-bg-elevated);

  /* ── BORDERS ─────────────────────────────────────
     Solid token for clean dividers.
     rgba tokens for transparent layering.
  ───────────────────────────────────────────────── */
  --color-border-subtle: #2A2C33;              /* solid — section dividers  */
  --color-border-soft:   rgba(255,255,255,0.06); /* panels, card edges        */
  --color-border-medium: rgba(255,255,255,0.10); /* focused/hovered borders   */
  --color-border-strong: rgba(255,255,255,0.18); /* prominent interactive elements */

  /* Legacy aliases */
  --color-border:       var(--color-border-soft);
  --color-border-hover: var(--color-border-medium);

  /* ── TEXT ────────────────────────────────────────
     Four-step contrast scale.
     primary → pure white for headings
     secondary → dimmed for body copy
     tertiary → for labels, captions
     muted → disabled, placeholders
  ───────────────────────────────────────────────── */
  --color-text-primary:   #FFFFFF;   /* headings, CTAs, high emphasis  */
  --color-text-secondary: #A0A0AB;   /* body copy, descriptions        */
  --color-text-tertiary:  #6B6B76;   /* labels, meta, captions         */
  --color-text-muted:     #46464F;   /* disabled, placeholder text     */
  --color-text-inverse:   #0D0D0F;   /* text on light backgrounds      */

  /* ── ACCENT ──────────────────────────────────────
     Oat Silk — used sparingly for highlights,
     interactive borders, skill bars, and cursor.
     Never use as a background fill.
  ───────────────────────────────────────────────── */
  --color-accent:        #F3E7D9;
  --color-accent-dim:    rgba(243, 231, 217, 0.07);
  --color-accent-glow:   rgba(255, 255, 255, 0.06);

  /* ── HERO RADIAL GRADIENT SYSTEM ─────────────────
     Three layered radial gradients create a subtle
     depth illusion without any blur or blob effect.
     Top-center: soft white dawn
     Left/right flanks: barely-there warm tone
     These are applied directly in layout.css on
     .hero__bg-gradient — NOT as box/filter effects.
  ───────────────────────────────────────────────── */
  --hero-radial-top:   rgba(255, 255, 255, 0.028);
  --hero-radial-flank: rgba(243, 231, 217, 0.014);
  --hero-radial-zero:  rgba(0, 0, 0, 0);

  /* Project themes */
  --color-maxxfitness-primary:   #F5A623;
  --color-maxxfitness-bg:        #0e0e0e;
  --color-maxxfitness-accent:    rgba(245, 166, 35, 0.12);

  --color-petmaster-primary:     #4a90d9;
  --color-petmaster-bg:          #0b1220;
  --color-petmaster-accent:      rgba(74, 144, 217, 0.12);

  --color-couzllectors-primary:  #FF3C38;
  --color-couzllectors-bg:       #F5F0E8;
  --color-couzllectors-accent:   rgba(255, 60, 56, 0.12);

  /* ── TYPOGRAPHY ── */
  --font-display:  'Clash Display', 'Georgia', serif;
  --font-body:     'DM Sans', 'Helvetica Neue', sans-serif;

  --text-xs:    0.75rem;    /* 12px */
  --text-sm:    0.875rem;   /* 14px */
  --text-base:  1rem;       /* 16px */
  --text-md:    1.125rem;   /* 18px */
  --text-lg:    1.375rem;   /* 22px */
  --text-xl:    1.75rem;    /* 28px */
  --text-2xl:   2.25rem;    /* 36px */
  --text-3xl:   3rem;       /* 48px */
  --text-4xl:   4rem;       /* 64px */
  --text-5xl:   5.5rem;     /* 88px */
  --text-6xl:   7.5rem;     /* 120px */

  --leading-tight:  1.1;
  --leading-snug:   1.3;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  --tracking-tight:  -0.04em;
  --tracking-snug:   -0.02em;
  --tracking-normal: 0em;
  --tracking-wide:   0.08em;
  --tracking-wider:  0.15em;

  /* ── SPACING ── */
  --space-1:   0.25rem;   /* 4px  */
  --space-2:   0.5rem;    /* 8px  */
  --space-3:   0.75rem;   /* 12px */
  --space-4:   1rem;      /* 16px */
  --space-5:   1.25rem;   /* 20px */
  --space-6:   1.5rem;    /* 24px */
  --space-8:   2rem;      /* 32px */
  --space-10:  2.5rem;    /* 40px */
  --space-12:  3rem;      /* 48px */
  --space-16:  4rem;      /* 64px */
  --space-20:  5rem;      /* 80px */
  --space-24:  6rem;      /* 96px */
  --space-32:  8rem;      /* 128px */
  --space-40:  10rem;     /* 160px */

  /* ── LAYOUT ── */
  --container-max:  1280px;
  --container-pad:  clamp(1.5rem, 5vw, 4rem);

  /* ── BORDERS ── */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-2xl:  40px;
  --radius-full: 9999px;

  /* ── SHADOWS ── */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:   0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.6);
  --shadow-xl:   0 40px 100px rgba(0,0,0,0.7);
  --shadow-glow: 0 0 40px var(--color-accent-glow);

  /* ── TRANSITIONS ── */
  --ease-out-expo:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-circ:  cubic-bezier(0, 0.55, 0.45, 1);
  --ease-out-back:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out:    cubic-bezier(0.65, 0, 0.35, 1);

  --duration-fast:    150ms;
  --duration-base:    300ms;
  --duration-slow:    500ms;
  --duration-slower:  800ms;

  /* ── Z-INDEX SCALE ── */
  --z-below:    -1;
  --z-base:      0;
  --z-raised:    10;
  --z-overlay:   50;
  --z-modal:     100;
  --z-nav:       200;
  --z-cursor:    9999;
}

/* ─────────────────────────────────────────────
   LIGHT MODE — Creamy warm palette
   Activated by [data-theme="light"] on <html>
   ───────────────────────────────────────────── */
[data-theme="light"] {

  --color-bg-primary:    #F5F0E8;
  --color-bg-secondary:  #EDE8DF;
  --color-bg-surface:    #E4DDD3;
  --color-bg-elevated:   #D9D1C5;

  --color-bg:         var(--color-bg-primary);
  --color-bg-2:       var(--color-bg-secondary);
  --color-bg-3:       var(--color-bg-surface);
  --color-surface:    var(--color-bg-surface);
  --color-surface-2:  var(--color-bg-elevated);

  --color-border-subtle: #C8C0B4;
  --color-border-soft:   rgba(0,0,0,0.07);
  --color-border-medium: rgba(0,0,0,0.12);
  --color-border-strong: rgba(0,0,0,0.20);
  --color-border:        var(--color-border-soft);
  --color-border-hover:  var(--color-border-medium);

  --color-text-primary:   #1A1612;
  --color-text-secondary: #4A4540;
  --color-text-tertiary:  #7A7268;
  --color-text-muted:     #A8A098;
  --color-text-inverse:   #F5F0E8;

  --color-accent:        #8B6F47;
  --color-accent-dim:    rgba(139, 111, 71, 0.1);
  --color-accent-glow:   rgba(139, 111, 71, 0.12);

  --hero-radial-top:   rgba(139, 111, 71, 0.06);
  --hero-radial-flank: rgba(139, 111, 71, 0.03);
  --hero-radial-zero:  rgba(0, 0, 0, 0);

  --shadow-sm:   0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:   0 8px 32px rgba(0,0,0,0.12);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.15);
  --shadow-xl:   0 40px 100px rgba(0,0,0,0.18);
}

/* Light mode overrides for specific components */
[data-theme="light"] body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

[data-theme="light"] .nav {
  background: rgba(245, 240, 232, 0.85);
}

[data-theme="light"] .nav.nav--scrolled {
  background: rgba(237, 232, 223, 0.96);
  border-bottom-color: var(--color-border-soft);
}

[data-theme="light"] .hero__bg-grid {
  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);
}

[data-theme="light"] .section-label {
  color: var(--color-accent);
  border-color: var(--color-accent-dim);
}

[data-theme="light"] .ability-card {
  background: rgba(255,255,255,0.5);
  border-color: var(--color-border-soft);
}

[data-theme="light"] .ability-card:hover {
  background: rgba(255,255,255,0.8);
}

[data-theme="light"] .ability-card__bar {
  background: rgba(0,0,0,0.08);
}

[data-theme="light"] .project__number {
  -webkit-text-stroke-color: var(--color-text-primary);
}

[data-theme="light"] .project--maxxfitness,
[data-theme="light"] .project--petmaster {
  filter: none;
}

[data-theme="light"] .contact {
  background: var(--color-bg-secondary);
}

[data-theme="light"] .page-curtain__panel {
  background: var(--color-bg-primary);
}

[data-theme="light"] .project-nav__logo {
  background: rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.12);
}

[data-theme="light"] .project-nav__item:hover .project-nav__logo {
  background: rgba(0,0,0,0.1);
  border-color: rgba(0,0,0,0.2);
}

[data-theme="light"] .project-nav__tooltip {
  background: rgba(26, 22, 18, 0.92);
  color: #F5F0E8;
}

[data-theme="light"] .hero__profile-ring {
  border-color: rgba(0,0,0,0.08);
}

[data-theme="light"] .mockup__placeholder {
  background: var(--color-bg-surface);
  color: var(--color-text-tertiary);
}

/* "Maxx" and "Pet" — in light mode project backgrounds stay dark,
   so we keep white but slightly warm it to match the light theme feel */
[data-theme="light"] .project--maxxfitness .title-plain {
  color: #F5F0E8;
}

[data-theme="light"] .project--petmaster .title-plain {
  color: #F5F0E8;
}

/* All non-title text stays white in light mode since backgrounds stay dark */
[data-theme="light"] .project--maxxfitness .project__description,
[data-theme="light"] .project--maxxfitness .project__type,
[data-theme="light"] .project--maxxfitness .project__tags li,
[data-theme="light"] .project--maxxfitness .btn--project,
[data-theme="light"] .project--petmaster .project__description,
[data-theme="light"] .project--petmaster .project__type,
[data-theme="light"] .project--petmaster .project__tags li,
[data-theme="light"] .project--petmaster .btn--project {
  color: #ffffff;
}

[data-theme="light"] .project--maxxfitness .project__tags li,
[data-theme="light"] .project--petmaster .project__tags li {
  border-color: rgba(255,255,255,0.2);
}

[data-theme="light"] .project--maxxfitness .btn--project,
[data-theme="light"] .project--petmaster .btn--project {
  border-color: rgba(255,255,255,0.3);
}

/* ─────────────────────────────────────────────
   MODERN CSS RESET
   ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: auto; /* GSAP handles smooth scroll */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  hanging-punctuation: first last;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  cursor: none; /* replaced by custom cursor */
}

/* Hide default cursor on interactive elements too */
a, button, [role="button"], input, textarea, select, label {
  cursor: none;
}

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

img {
  height: auto;
  object-fit: cover;
}

ul, ol {
  list-style: none;
}

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

button {
  background: none;
  border: none;
  font: inherit;
  color: inherit;
}

input, textarea, select {
  font: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

p {
  max-width: 65ch;
}

em {
  font-style: italic;
  color: var(--color-accent);
}

strong {
  font-weight: 600;
}

/* ─────────────────────────────────────────────
   TYPOGRAPHY SCALE
   ───────────────────────────────────────────── */

/* Display — hero name, major headings */
.text-display {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 9vw, var(--text-6xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

/* Section titles */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

/* Section eyebrow label */
.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

/* Body text variants */
.text-lg  { font-size: var(--text-lg); }
.text-md  { font-size: var(--text-md); }
.text-sm  { font-size: var(--text-sm); }
.text-muted { color: var(--color-text-secondary); }

/* ─────────────────────────────────────────────
   BUTTONS
   ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  transition:
    transform var(--duration-base) var(--ease-out-expo),
    opacity var(--duration-base) var(--ease-out-expo),
    box-shadow var(--duration-base) var(--ease-out-expo);
  will-change: transform, opacity;
  position: relative;
  overflow: hidden;
}

/* Primary button */
.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  box-shadow: 0 4px 20px var(--color-accent-glow);
}

.btn--primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 32px var(--color-accent-glow);
}

.btn--primary:active {
  transform: translateY(0) scale(0.98);
}

/* Ghost button */
.btn--ghost {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  background: rgba(255,255,255,0.04);
}

/* Project case study button */
.btn--project {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  transition:
    gap var(--duration-base) var(--ease-out-expo),
    border-color var(--duration-base) ease,
    color var(--duration-base) ease;
}

.btn--project svg {
  width: 18px;
  height: 18px;
  transition: transform var(--duration-base) var(--ease-out-expo);
}

.btn--project:hover {
  gap: var(--space-5);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--project:hover svg {
  transform: translate(4px, -4px);
}

/* Contact CTA button */
.btn--contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5) var(--space-12);
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--text-md);
  font-weight: 500;
  letter-spacing: var(--tracking-snug);
  position: relative;
  overflow: hidden;
  transition:
    transform var(--duration-base) var(--ease-out-expo),
    box-shadow var(--duration-base) var(--ease-out-expo);
  will-change: transform;
}

.btn--contact:hover {
  transform: scale(1.05);
  box-shadow: 0 0 60px rgba(255,255,255,0.12);
}

.btn--contact:active {
  transform: scale(0.97);
}

.btn__glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.3), transparent 70%);
  transition: opacity var(--duration-base) ease;
  pointer-events: none;
}

.btn--contact:hover .btn__glow {
  opacity: 1;
}

/* ─────────────────────────────────────────────
   CUSTOM CURSOR
   ───────────────────────────────────────────── */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  background: #ffffff;
  border-radius: var(--radius-full);
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  will-change: transform;
  mix-blend-mode: difference;
  transition: width 0.2s var(--ease-out-expo),
              height 0.2s var(--ease-out-expo);
}

.cursor-follower {
  position: fixed;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-full);
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  will-change: transform;
  mix-blend-mode: difference;
}

/* Cursor expand state — on hover of interactive elements */
body.cursor-expanded .cursor {
  width: 60px;
  height: 60px;
  background: #ffffff;
}

body.cursor-expanded .cursor-follower {
  opacity: 0;
}

/* ─────────────────────────────────────────────
   NOISE / GRAIN OVERLAY
   ───────────────────────────────────────────── */
.noise-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-overlay);
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  animation: noise-move 12s steps(6) infinite;
}

@keyframes noise-move {
  0%   { transform: translate(0, 0); }
  16%  { transform: translate(-3%, -3%); }
  33%  { transform: translate(3%, 2%); }
  50%  { transform: translate(-2%, 3%); }
  66%  { transform: translate(3%, -2%); }
  83%  { transform: translate(-3%, 1%); }
  100% { transform: translate(0, 0); }
}

/* ─────────────────────────────────────────────
   CONTAINER
   ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ─────────────────────────────────────────────
   SECTION HEADER
   ───────────────────────────────────────────── */
.section-header {
  margin-bottom: var(--space-16);
}

/* ─────────────────────────────────────────────
   SCROLL REVEAL — initial hidden state
   JS will animate these in
   ───────────────────────────────────────────── */
[data-scroll-reveal] {
  opacity: 0;
  transform: translateY(40px);
  will-change: transform, opacity;
}

/* ─────────────────────────────────────────────
   SELECTION
   ───────────────────────────────────────────── */
::selection {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

/* ─────────────────────────────────────────────
   FOCUS — accessible, styled
   ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* ─────────────────────────────────────────────
   SCROLLBAR
   ───────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 4px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ─────────────────────────────────────────────
   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;
}

.gpu {
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

.no-select {
  user-select: none;
  -webkit-user-select: none;
}

/* ─────────────────────────────────────────────
   REDUCED MOTION
   Respect user accessibility preferences
   ───────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-scroll-reveal] {
    opacity: 1;
    transform: none;
  }

  .noise-overlay {
    display: none;
  }
}

/* ─────────────────────────────────────────────
   RESPONSIVE — cursor off on touch devices
   ───────────────────────────────────────────── */
@media (hover: none) and (pointer: coarse) {
  .cursor,
  .cursor-follower {
    display: none !important;
  }

  body, a, button, [role="button"] {
    cursor: auto !important;
  }

  /* Also disable Finn's custom cursor on touch */
  #finn-cursor-el {
    display: none !important;
  }
}