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

:root {
  --bg1: #0d0c1d;
  --bg2: #1a1a2e;
  --accent1: #7f5af0;
  --accent2: #2cb9ff;
  --text: #e6eaf2;
}

* {margin:0;padding:0;box-sizing:border-box}
body {
  font-family: 'Vazirmatn', sans-serif;
  background: radial-gradient(circle at 20% 20%, var(--bg2) 0%, var(--bg1) 100%);
  color: var(--text);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
    /* تصویر بکگراند اصلی */
  background: url('background.png') no-repeat center center fixed;
  background-size: cover; /* پوشش کامل صفحه */
  
  /* Overlay تیره برای خوانایی متن */
  position: relative;
}
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5); /* شفافیت overlay برای متن قابل خواندن */
  z-index: -1;
}
/* Particle Background Layer */
#particles-bg {
  position: fixed;
  top:0; left:0;
  width:100%; height:100%;
  z-index:-1;
}

/* Glass Header */
header {
  position: fixed;
  top:0; width:100%;
  backdrop-filter: blur(14px);
  background: rgba(0,0,0,0.35);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  z-index: 50;
}
header .container {
  max-width: 1100px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
}
header .logo {
  font-size: 1.8rem;
  font-weight: bold;
  background: linear-gradient(90deg,var(--accent1),var(--accent2));
  -webkit-background-clip: text;
  color: transparent;
}
header nav a {
  margin: 0 1rem;
  color: var(--text);
  text-decoration: none;
  transition: color .3s;
}
header nav a:hover { color: var(--accent2); }

/* Generic sections */
section {
  padding: 6rem 1rem 4rem;
  max-width: 1100px;
  margin: auto;
  text-align: center;
}
h1.gradient {
  font-size: 3rem;
  background: linear-gradient(90deg,var(--accent1),var(--accent2));
  -webkit-background-clip:text;
  color:transparent;
  margin-bottom:1rem;
}
p.lead {font-size:1.2rem; opacity:0.85;}

/* Cards */
.grid {display:grid; gap:1.5rem;}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(3,1fr);}}

.card {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 1.5rem;
  transition: transform .3s, box-shadow .3s;
}
.card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow:0 0 20px rgba(127,90,240,0.4);
}
.card h3 {margin-bottom:0.5rem; color:var(--accent2);}

/* Buttons */
.btn {
  display:inline-block;
  padding:0.8rem 1.6rem;
  border-radius:9999px;
  background: linear-gradient(90deg,var(--accent1),var(--accent2));
  color:#fff;
  text-decoration:none;
  font-weight:bold;
  transition:transform .25s, box-shadow .25s;
}
.btn:hover {transform:scale(1.05); box-shadow:0 0 12px var(--accent1);}

/* Footer */
footer {
  text-align:center;
  padding:2rem;
  background: rgba(0,0,0,0.4);
  margin-top: 3rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* Music Player Floating Button */
#music-toggle {
  position: fixed;
  bottom: 20px; right: 20px;
  background: linear-gradient(90deg,var(--accent1),var(--accent2));
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 60px; height: 60px;
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow:0 0 12px var(--accent1);
  transition: transform .3s;
  z-index: 60;
}
#music-toggle:hover {transform: scale(1.1);}

/* Music Control Panel */
#music-panel {
  position: fixed;
  bottom: 90px; right: 20px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(10px);
  padding: 1rem;
  border-radius: 15px;
  display: none;
  width: 200px;
  text-align: center;
  z-index: 60;
}
#music-panel input[type=range] {
  width: 100%;
}
/* === DOCS PAGE === */
.docs-container {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 2rem;
  margin-top: 7rem;
  padding: 0 1rem 3rem;
  max-width: 1200px;
}
.docs-sidebar {
  position: sticky;
  top: 100px;
  height: max-content;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  padding: 1rem;
}
.docs-sidebar a {
  display: block;
  padding: .5rem .2rem;
  color: var(--text);
  text-decoration: none;
  transition: color .3s;
}
.docs-sidebar a:hover,
.docs-sidebar a.active {
  color: var(--accent2);
}

.docs-content h2 {
  font-size: 1.8rem;
  color: var(--accent1);
  margin: 2rem 0 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: .3rem;
}
.docs-content p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

/* Code block style */
pre {
  background: #1a1a2e;
  color: #cbd5e1;
  padding: 1rem;
  border-radius: 12px;
  overflow-x: auto;
  direction: ltr; /* برای کد انگلیسی */
  text-align: left;
  margin-bottom: 1.5rem;
}
/* برای drag cursor */
#lightbox.grabbing {
  cursor: grabbing;
}
.hero-images {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin: 3rem 0;
}

.image-container {
  width: 100%;
  max-width: 500px; /* حداکثر عرض */
  height: 400px; /* ارتفاع ثابت برای اسکرول */
  overflow: auto; /* اسکرول داخلی */
  border-radius: 15px;
  box-shadow: 0 0 25px rgba(127,90,240,0.5);
  position: relative;
}
.image-container-char {
  width: 100%;
  max-width: 640px; /* حداکثر عرض */
  height: 358px; /* ارتفاع ثابت برای اسکرول */
  overflow: auto; /* اسکرول داخلی */
  border-radius: 15px;
  box-shadow: 0 0 25px rgba(127,90,240,0.5);
  position: relative;
}

.image-container img {
  display: block;
  width: 100%; /* عکس بزرگتر از container خودش کشیده میشه */
  height: auto;
  transition: transform 0.3s;
  cursor: grab;
}

/* Drag cursor */
.image-container img:active {
  cursor: grabbing;
}
/* Play/Pause Button */
#play-pause {
  background: linear-gradient(90deg,var(--accent1),var(--accent2));
  color: #fff;
  border: none;
  padding: 0.7rem 1.2rem;
  border-radius: 9999px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(127,90,240,0.6);
  transition: all 0.3s ease;
  width: 100%;
}

#play-pause:hover {
  transform: scale(1.05);
  box-shadow: 0 0 18px rgba(44,185,255,0.7);
}

#play-pause:active {
  transform: scale(0.95);
}