/* ============================================
   FANTASY RPG PORTFOLIO — DESIGN SYSTEM
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=MedievalSharp&family=Crimson+Text:ital,wght@0,400;0,600;0,700;1,400&family=Uncial+Antiqua&display=swap');

/* --- Design Tokens --- */
:root {
  /* Core Palette */
  --parchment:        #f4e4c1;
  --parchment-light:  #faf3e3;
  --parchment-dark:   #d4c4a1;
  --ink-dark:         #2a1a0a;
  --ink-brown:        #3a2a1a;
  --ink-medium:       #5a4a3a;
  --gold:             #c9a84c;
  --gold-light:       #e8d68a;
  --gold-bright:      #ffd700;
  --deep-blue:        #1a2744;
  --royal-blue:       #2a4a7a;
  --emerald:          #2d5a3d;
  --crimson:          #8b2500;
  --shadow-dark:      rgba(20, 10, 0, 0.6);
  --shadow-medium:    rgba(20, 10, 0, 0.35);
  --shadow-light:     rgba(20, 10, 0, 0.15);
  --glow-gold:        rgba(201, 168, 76, 0.6);
  --glow-blue:        rgba(100, 180, 255, 0.4);

  /* Typography */
  --font-heading:     'MedievalSharp', cursive;
  --font-body:        'Crimson Text', Georgia, serif;
  --font-accent:      'Uncial Antiqua', cursive;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Borders */
  --border-ornate:    2px solid var(--gold);
  --border-subtle:    1px solid var(--parchment-dark);
  --radius-sm:        4px;
  --radius-md:        8px;
  --radius-lg:        12px;

  /* Transitions */
  --ease-smooth:      cubic-bezier(0.16, 1, 0.3, 1); /* Premium fluid motion */
  --ease-bounce:      cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-dramatic:    cubic-bezier(0.25, 1, 0.5, 1);
  --ease-cinematic:   cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast:    200ms;
  --duration-normal:  400ms;
  --duration-slow:    700ms;
  --duration-cinematic: 1000ms;

  /* Z-Layers */
  --z-map:            1;
  --z-hotspot:        10;
  --z-tooltip:        20;
  --z-particles:      5;
  --z-overlay:        50;
  --z-page:           60;
  --z-nav:            70;
  --z-loading:        100;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--ink-brown);
  background: var(--ink-dark);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  line-height: 1.6;
}

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

a {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-smooth);
}

a:hover {
  color: var(--gold-light);
}

button {
  font-family: var(--font-heading);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* --- RPG Scrollbar --- */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--ink-dark);
  border-left: 1px solid var(--ink-brown);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--gold), var(--ink-brown));
  border-radius: 5px;
  border: 1px solid var(--gold);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--gold-light), var(--gold));
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--gold) var(--ink-dark);
}

/* --- Loading Screen --- */
#loading-screen {
  position: fixed;
  inset: 0;
  z-index: var(--z-loading);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, #2a1a0a 0%, #0d0800 100%);
  transition: opacity 0.6s var(--ease-smooth), visibility 0.6s;
}

#loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-title {
  font-family: var(--font-accent);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--gold);
  text-shadow: 0 0 20px var(--glow-gold), 0 2px 4px rgba(0,0,0,0.8);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.1em;
}

.loading-bar-container {
  width: min(300px, 70vw);
  height: 6px;
  background: var(--ink-brown);
  border-radius: 3px;
  border: 1px solid var(--gold);
  overflow: hidden;
  position: relative;
}

.loading-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright), var(--gold));
  border-radius: 3px;
  box-shadow: 0 0 10px var(--glow-gold);
  /* Use scaleX instead of width for GPU-composited animation */
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease-smooth);
  will-change: transform;
}

.loading-text {
  font-family: var(--font-body);
  color: var(--parchment-dark);
  font-size: 0.85rem;
  margin-top: var(--space-md);
  font-style: italic;
  letter-spacing: 0.05em;
}

/* --- Medieval UI Components --- */

/* Parchment Button */
.btn-medieval {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--parchment);
  background: linear-gradient(135deg, var(--ink-brown) 0%, #4a3a2a 100%);
  border: var(--border-ornate);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px var(--shadow-medium), inset 0 1px 0 rgba(255,255,255,0.1);
  /* Only transition GPU-composited properties */
  transition: transform var(--duration-normal) var(--ease-smooth);
  will-change: transform;
  position: relative;
  overflow: hidden;
}

.btn-medieval::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(201, 168, 76, 0.15) 100%);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}

/* Glow layer — fades in on hover instead of animating box-shadow */
.btn-medieval::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: calc(var(--radius-sm) + 4px);
  box-shadow: 0 4px 16px var(--shadow-medium), 0 0 20px var(--glow-gold);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-smooth);
  pointer-events: none;
}

.btn-medieval:hover {
  /* Transform handled by VanillaTilt */
}

.btn-medieval:hover::before {
  opacity: 1;
}

.btn-medieval:hover::after {
  opacity: 1;
}

.btn-medieval:active {
  /* Transform handled by VanillaTilt */
}

/* Parchment Card */
.card-parchment {
  background: linear-gradient(145deg, var(--parchment-light) 0%, var(--parchment) 50%, var(--parchment-dark) 100%);
  border: 1px solid var(--parchment-dark);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: 0 4px 12px var(--shadow-light), inset 0 1px 0 rgba(255,255,255,0.5);
  position: relative;
}

.card-parchment::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: calc(var(--radius-md) - 2px);
  pointer-events: none;
}

/* Screen-reader only */
.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;
}

/* --- Utility --- */
.text-gold { color: var(--gold); }
.text-parchment { color: var(--parchment); }
.font-heading { font-family: var(--font-heading); }
.font-accent { font-family: var(--font-accent); }