/* ============================================================
   BOOK OF RAVINE — style.css
   Book of Ravine trace manuscript style
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo+Black&family=Cardo:wght@400;700&display=swap');

:root {
  --void: #0d1013;
  --tomb: #141a21;
  --chamber: #1e2731;
  --papyrus: #eef5f9;
  --papyrus-dk: #c6d3dc;
  --papyrus-sh: #667889;
  --gold: #8bc2d1;
  --gold-lt: #c6e7ee;
  --gold-dk: #4a7f8e;
  --gold-glow: rgba(139,194,209,.35);
  --ink: #111921;
  --ink-fresh: #8bc2d1;
  --red: #ff735a;
  --green: #8de3b0;
  --blue: #89baff;
  --text: #eef5f9;
  --text-dim: #94a7b5;
  --radius:     6px;
  --radius-lg:  14px;
  --shadow:     0 4px 32px rgba(0,0,0,0.8);
  --font-title:'Archivo Black', sans-serif;
  --font-body: 'Cardo', serif;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}

body{
  background:var(--void); color:var(--text);
  font-family:var(--font-body); min-height:100vh; overflow-x:hidden;
}
body::before{
  content:''; position:fixed; inset:0;
  background:radial-gradient(ellipse 70% 50% at 50% 0%,rgba(100,60,0,0.15) 0%,transparent 70%);
  pointer-events:none; z-index:0;
}

/* ── HEADER ─────────────────────────────────────────────────── */
header{
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 36px;
  background:linear-gradient(180deg,var(--tomb) 0%,rgba(26,18,8,0.85) 100%);
  border-bottom:1px solid rgba(200,150,10,0.3);
  position:sticky; top:0; z-index:100;
  box-shadow:0 2px 24px rgba(0,0,0,0.8);
}
header::after{content:'';position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);}

.logo{font-family:var(--font-title);font-size:1.35rem;font-weight:700;letter-spacing:3px;color:var(--gold-lt);text-shadow:0 0 20px var(--gold-glow);display:flex;align-items:center;gap:10px;}
.logo-icon{font-size:1.2rem;filter:drop-shadow(0 0 6px var(--gold));}

nav{display:flex;align-items:center;gap:22px;}
nav a{font-family:var(--font-title);font-size:0.65rem;letter-spacing:2px;color:var(--text-dim);text-decoration:none;transition:all 0.2s;}
nav a:hover{color:var(--gold-lt);text-shadow:0 0 8px var(--gold-glow);}

#lang-switcher{position:relative;}
#lang-btn{font-family:var(--font-title);font-size:0.6rem;letter-spacing:1.5px;padding:6px 12px;background:rgba(200,150,10,0.08);border:1px solid rgba(200,150,10,0.35);border-radius:var(--radius);color:var(--gold-lt);cursor:pointer;transition:all 0.2s;display:flex;align-items:center;gap:6px;}
#lang-btn:hover{background:rgba(200,150,10,0.18);border-color:var(--gold);}
#lang-btn .arrow{font-size:0.6rem;opacity:0.7;transition:transform 0.2s;}
#lang-btn.open .arrow{transform:rotate(180deg);}
#lang-dropdown{display:none;position:absolute;top:calc(100% + 6px);right:0;background:#2a1f0a;border:1px solid rgba(200,150,10,0.35);border-radius:var(--radius);overflow:hidden;z-index:200;box-shadow:var(--shadow);min-width:140px;}
#lang-dropdown.open{display:block;}
.lang-option{display:flex;align-items:center;gap:8px;padding:9px 14px;font-family:var(--font-title);font-size:0.6rem;letter-spacing:1px;color:var(--text-dim);cursor:pointer;transition:background 0.15s;border-bottom:1px solid rgba(200,150,10,0.1);}
.lang-option:last-child{border-bottom:none;}
.lang-option:hover{background:rgba(200,150,10,0.18);color:var(--gold-lt);}
.lang-option.active{color:var(--gold-lt);}
.lang-flag{font-size:1.1rem;line-height:1;}

/* ── GAME SECTION ───────────────────────────────────────────── */
#game-section{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;padding:18px 16px 48px;gap:12px;}

/* ── HUD ─────────────────────────────────────────────────────── */
#hud{
  display:flex;align-items:stretch;width:100%;max-width:620px;
  background:var(--tomb);border:1px solid rgba(200,150,10,0.25);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
}
.hud-cell{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:10px 6px;border-right:1px solid rgba(200,150,10,0.1);}
.hud-cell:last-child{border-right:none;}
.hud-label{font-family:var(--font-title);font-size:0.44rem;letter-spacing:2px;color:var(--text-dim);}
.hud-value{font-family:var(--font-title);font-size:1.3rem;font-weight:700;color:var(--gold-lt);line-height:1;text-shadow:0 0 10px var(--gold-glow);}
#stars-display{display:flex;gap:2px;font-size:1rem;}
#time-value.urgent{color:var(--red);animation:pulse-time 0.4s ease infinite alternate;}
@keyframes pulse-time{from{text-shadow:none;}to{text-shadow:0 0 12px var(--red);}}

#hud-controls{display:flex;align-items:center;gap:6px;padding:0 10px;border-left:1px solid rgba(200,150,10,0.1);flex-shrink:0;}
.diff-btn{font-family:var(--font-title);font-size:0.5rem;letter-spacing:1px;padding:4px 9px;background:transparent;border:1px solid rgba(200,150,10,0.25);border-radius:20px;color:var(--text-dim);cursor:pointer;transition:all 0.2s;touch-action:manipulation;}
.diff-btn.active,.diff-btn:hover{border-color:var(--gold);color:var(--gold-lt);background:rgba(200,150,10,0.1);}
#start-btn{font-family:var(--font-title);font-size:0.72rem;font-weight:700;letter-spacing:1px;padding:8px 16px;background:linear-gradient(135deg,var(--gold-dk),var(--gold));border:none;border-radius:var(--radius);color:var(--tomb);cursor:pointer;transition:all 0.15s;box-shadow:0 0 16px var(--gold-glow);touch-action:manipulation;white-space:nowrap;}
#start-btn:hover{transform:translateY(-1px);box-shadow:0 0 28px var(--gold-glow);}
#start-btn:active{transform:scale(0.97);}

/* ── BOOK CANVAS WRAP ────────────────────────────────────────── */
#canvas-wrap{
  position:relative;width:100%;max-width:620px;
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow),0 0 60px rgba(100,60,0,0.15);
  cursor:crosshair;
  background:#1a1208;
}
/* two-layer canvas approach */
#book-canvas{display:block;width:100%;height:auto;touch-action:none;user-select:none;position:relative;z-index:1;}
#draw-canvas{position:absolute;inset:0;width:100%;height:100%;touch-action:none;user-select:none;z-index:2;}

/* symbol name label */
#symbol-name{
  position:absolute;top:12px;left:50%;transform:translateX(-50%);
  font-family:var(--font-title);font-size:0.75rem;letter-spacing:3px;
  color:var(--gold);background:rgba(5,3,1,0.7);
  padding:5px 16px;border-radius:20px;
  border:1px solid rgba(200,150,10,0.3);
  pointer-events:none;z-index:10;
  text-shadow:0 0 8px var(--gold-glow);
  white-space:nowrap;
}
#page-label{
  position:absolute;bottom:10px;right:16px;
  font-family:var(--font-title);font-size:0.58rem;letter-spacing:1px;
  color:rgba(200,150,10,0.5);pointer-events:none;z-index:10;
}

/* accuracy ring overlay */
#accuracy-ring{
  position:absolute;bottom:14px;left:16px;
  width:52px;height:52px;z-index:10;pointer-events:none;
}

/* ── PROGRESS DOTS ───────────────────────────────────────────── */
#progress-wrap{
  width:100%;max-width:620px;
  background:var(--tomb);border:1px solid rgba(200,150,10,0.2);
  border-radius:var(--radius-lg);padding:10px 20px;
  display:flex;align-items:center;justify-content:center;gap:8px;
  box-shadow:var(--shadow);
}
.page-dot{
  width:28px;height:28px;border-radius:50%;
  border:2px solid rgba(200,150,10,0.25);
  display:flex;align-items:center;justify-content:center;
  font-size:0.7rem;transition:all 0.3s;
  font-family:var(--font-title);color:var(--text-dim);
}
.page-dot.current{border-color:var(--gold);color:var(--gold-lt);box-shadow:0 0 10px var(--gold-glow);background:rgba(200,150,10,0.1);}
.page-dot.done-3{background:var(--gold);border-color:var(--gold-lt);color:var(--tomb);}
.page-dot.done-2{background:rgba(200,150,10,0.5);border-color:var(--gold);}
.page-dot.done-1{background:rgba(200,150,10,0.2);border-color:rgba(200,150,10,0.5);}

/* ── OVERLAY ─────────────────────────────────────────────────── */
#overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:28px;background:rgba(5,3,1,0.93);backdrop-filter:blur(10px);
  transition:opacity 0.4s;z-index:30;border-radius:calc(var(--radius-lg) - 2px);
}
#overlay.hidden{opacity:0;pointer-events:none;}

.overlay-icon{font-size:4.5rem;animation:float-icon 4s ease-in-out infinite;filter:drop-shadow(0 0 16px var(--gold-glow));}
@keyframes float-icon{0%,100%{transform:translateY(0) rotate(-2deg);}50%{transform:translateY(-14px) rotate(2deg);}}

.overlay-title{font-family:var(--font-title);font-size:1.9rem;font-weight:900;letter-spacing:4px;color:var(--gold-lt);text-align:center;text-shadow:0 0 30px var(--gold-glow);}
.overlay-title::after{content:' 𓂀 𓁹 𓂀';display:block;font-size:0.9rem;letter-spacing:6px;color:var(--gold-dk);margin-top:4px;text-shadow:none;}
.overlay-sub{color:var(--text-dim);font-size:1rem;font-style:italic;text-align:center;max-width:380px;line-height:1.7;}

/* stars in overlay */
.stars-row{display:flex;gap:10px;justify-content:center;font-size:2.2rem;filter:drop-shadow(0 0 8px var(--gold-glow));}

.overlay-btn{font-family:var(--font-title);font-size:0.82rem;font-weight:700;letter-spacing:3px;padding:13px 44px;background:transparent;border:2px solid var(--gold);border-radius:var(--radius);color:var(--gold-lt);cursor:pointer;transition:all 0.2s;box-shadow:0 0 18px rgba(200,150,10,0.12);touch-action:manipulation;}
.overlay-btn:hover{background:rgba(200,150,10,0.12);box-shadow:0 0 36px var(--gold-glow);transform:translateY(-2px);}
.overlay-btn:active{transform:scale(0.97);}

/* ── FLASH LABEL ─────────────────────────────────────────────── */
#flash-label{
  position:absolute;left:50%;top:28%;transform:translateX(-50%);
  font-family:var(--font-title);font-size:1.8rem;font-weight:700;
  pointer-events:none;opacity:0;z-index:20;white-space:nowrap;letter-spacing:4px;
  text-shadow:0 0 20px currentColor;
}
#flash-label.show{animation:flash-pop 1.3s ease-out forwards;}
@keyframes flash-pop{
  0%{opacity:1;transform:translateX(-50%) scale(0.75);}
  20%{opacity:1;transform:translateX(-50%) scale(1.12);}
  60%{opacity:1;transform:translateX(-50%) translateY(-30px) scale(1);}
  100%{opacity:0;transform:translateX(-50%) translateY(-65px) scale(0.9);}
}

/* ── ABOUT / LEGAL ───────────────────────────────────────────── */
.page-hero{position:relative;z-index:1;padding:52px 36px 40px;background:linear-gradient(180deg,var(--tomb) 0%,rgba(26,18,8,0.8) 100%);border-bottom:1px solid rgba(200,150,10,0.22);}
.page-hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);}
.page-hero h1{font-family:var(--font-title);font-size:2.2rem;font-weight:700;letter-spacing:4px;color:var(--gold-lt);margin-bottom:10px;text-shadow:0 0 20px var(--gold-glow);}
.page-hero .hero-icon{font-size:3.5rem;margin-bottom:14px;filter:drop-shadow(0 0 12px var(--gold-glow));}
.page-hero p{font-size:1.05rem;color:var(--text-dim);max-width:640px;line-height:1.7;}

.content-section{position:relative;z-index:1;padding:52px 36px;max-width:960px;margin:0 auto;}
.content-section+.content-section{border-top:1px solid rgba(200,150,10,0.1);}
.section-heading{font-family:var(--font-title);font-size:1.35rem;font-weight:700;letter-spacing:4px;color:var(--gold-lt);margin-bottom:22px;display:flex;align-items:center;gap:14px;text-shadow:0 0 12px var(--gold-glow);}
.section-heading::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,rgba(200,150,10,0.4),transparent);}

.card-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.info-card{background:linear-gradient(135deg,rgba(26,18,8,0.8),rgba(10,8,4,0.9));border:1px solid rgba(200,150,10,0.15);border-radius:var(--radius-lg);padding:22px;border-left:3px solid var(--gold);transition:all 0.2s;}
.info-card:hover{transform:translateY(-2px);border-color:var(--gold-lt);}
.info-card h3{font-family:var(--font-title);font-size:0.8rem;letter-spacing:2px;color:var(--gold);margin-bottom:10px;text-shadow:0 0 8px var(--gold-glow);}
.info-card p,.info-card li{color:var(--text-dim);font-size:0.95rem;line-height:1.75;}
.info-card ul{padding-left:0;list-style:none;display:flex;flex-direction:column;gap:5px;}
.info-card li::before{content:'𓂃  ';color:var(--gold-dk);}

.steps{display:flex;flex-direction:column;gap:14px;}
.step{display:flex;gap:16px;background:linear-gradient(135deg,rgba(26,18,8,0.8),rgba(10,8,4,0.9));border-radius:var(--radius);padding:16px;border-left:3px solid var(--papyrus-sh);}
.step-num{font-family:var(--font-title);font-size:1.8rem;font-weight:700;color:var(--papyrus-sh);flex-shrink:0;line-height:1;text-shadow:0 0 8px var(--gold-glow);}
.step-body h4{font-family:var(--font-title);font-size:0.8rem;letter-spacing:2px;color:var(--gold-lt);margin-bottom:4px;}
.step-body p{color:var(--text-dim);font-size:0.95rem;line-height:1.65;}

.symbol-showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.symbol-card{background:linear-gradient(135deg,rgba(26,18,8,0.9),rgba(10,8,4,0.95));border:1px solid rgba(200,150,10,0.15);border-radius:var(--radius-lg);padding:20px;text-align:center;transition:all 0.2s;}
.symbol-card:hover{border-color:var(--gold);transform:translateY(-2px);}
.symbol-icon{font-size:2.2rem;margin-bottom:8px;filter:drop-shadow(0 0 8px var(--gold-glow));}
.symbol-card h4{font-family:var(--font-title);font-size:0.75rem;letter-spacing:2px;color:var(--gold);margin-bottom:4px;}
.symbol-card p{font-size:0.85rem;color:var(--text-dim);font-style:italic;}

.controls-grid{display:grid;grid-template-columns:auto 1fr;gap:8px 14px;align-items:center;}
.key{background:rgba(200,150,10,0.08);border:1px solid rgba(200,150,10,0.25);border-radius:4px;padding:3px 10px;font-family:var(--font-title);font-size:0.65rem;letter-spacing:1px;color:var(--gold-lt);white-space:nowrap;}
.key-desc{color:var(--text-dim);font-size:0.92rem;font-style:italic;}

.legal-content{position:relative;z-index:1;padding:48px 36px;max-width:820px;margin:0 auto;}
.legal-content h2{font-family:var(--font-title);font-size:0.95rem;letter-spacing:2px;color:var(--gold-lt);margin:32px 0 12px;}
.legal-content h2:first-child{margin-top:0;}
.legal-content p,.legal-content li{color:var(--text-dim);font-size:0.95rem;line-height:1.8;margin-bottom:10px;}
.legal-content ul{padding-left:20px;margin-bottom:16px;}
.highlight{background:rgba(200,150,10,0.07);border-left:3px solid var(--gold);padding:12px 16px;border-radius:0 8px 8px 0;margin:16px 0;}
.legal-divider{height:1px;background:rgba(200,150,10,0.15);margin:28px 0;}
.last-updated{font-size:0.82rem;color:var(--text-dim);font-style:italic;margin-bottom:28px;}

.contact-row{display:flex;gap:14px;flex-wrap:wrap;}
.contact-card{flex:1;min-width:180px;background:rgba(26,18,8,0.6);border:1px solid rgba(200,150,10,0.15);border-radius:var(--radius-lg);padding:18px 22px;display:flex;flex-direction:column;gap:6px;}
.contact-card .label{font-family:var(--font-title);font-size:0.5rem;letter-spacing:2px;color:var(--gold-dk);}
.contact-card a,.contact-card p{color:var(--gold-lt);font-size:0.9rem;text-decoration:none;transition:color 0.2s;word-break:break-all;}
.contact-card a:hover{color:var(--text);}

footer{position:relative;z-index:1;background:var(--tomb);border-top:1px solid rgba(200,150,10,0.12);padding:18px 36px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.footer-left{font-family:var(--font-title);font-size:0.6rem;letter-spacing:1px;color:var(--text-dim);}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{font-family:var(--font-title);font-size:0.6rem;letter-spacing:1px;color:var(--text-dim);text-decoration:none;transition:color 0.2s;}
.footer-links a:hover{color:var(--gold-lt);}

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media(max-width:640px){
  header{padding:10px 16px;} .logo{font-size:1.1rem;} nav{gap:14px;}
  #game-section{padding:12px 8px 40px;gap:10px;}
  #canvas-wrap,#hud,#progress-wrap{max-width:100%;}
  .card-grid,.symbol-showcase{grid-template-columns:1fr;}
  .content-section{padding:40px 16px;}
  .page-hero{padding:36px 20px 28px;} .page-hero h1{font-size:1.7rem;}
  .legal-content{padding:36px 20px;}
  footer{padding:14px 20px;flex-direction:column;text-align:center;}
  .overlay-title{font-size:1.5rem;} .stars-row{font-size:1.8rem;}
}
@media(max-width:480px){
  header{padding:8px 12px;} .logo{font-size:0.95rem;}
  nav a{display:none;} nav a.always{display:block;}
  #hud{flex-wrap:wrap;}
  .hud-cell{min-width:calc(33% - 2px);padding:7px 4px;} .hud-value{font-size:1.1rem;}
  #hud-controls{width:100%;justify-content:center;border-left:none;border-top:1px solid rgba(200,150,10,0.1);padding:8px;}
  #lang-dropdown{right:auto;left:0;}
}
@media(hover:none){
  .info-card:hover,.symbol-card:hover{transform:none;}
  .overlay-btn:hover,#start-btn:hover{transform:none;}
  .overlay-btn:active,#start-btn:active{transform:scale(0.97);}
}


/* ===== Book of Ravine unique visual layer — trace/draw logic preserved ===== */
body {
  background:
    radial-gradient(circle at 18% 10%, #8bc2d124, transparent 24%),
    radial-gradient(circle at 84% 18%, #89baff1f, transparent 28%),
    linear-gradient(180deg, var(--void), #000);
}
.logo::before {
  content:'';
  width:30px;height:30px;display:inline-block;margin-right:8px;
  background:url('../assets/images/favicon.svg') center/contain no-repeat;
  vertical-align:-7px;
}
.logo-icon { display:none; }
header { border-bottom-color:#c6e7ee66; }
#canvas-wrap, #hud, .about-card, .content-card, .legal-card {
  border-radius: calc(var(--radius-lg) + 5px);
  box-shadow: 0 20px 58px rgba(0,0,0,.42), 0 0 34px #8bc2d122;
}
.overlay-title, .section-heading, .page-title {
  text-shadow: 0 0 24px #c6e7ee42;
}
.diff-btn.active, #start-btn, .overlay-btn { border-radius:999px; }