*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f0f0f;--bg2:#1a1a1a;--bg3:#272727;--surface:#212121;--border:#333;--text:#f1f1f1;--text2:#aaa;--accent:#3ea6ff;--accent2:#065fd4;--red:#ff4444;--green:#2ba640;--radius:8px;--shadow:0 1px 6px rgba(0,0,0,.4)}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}

/* NAV */
.nav{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;padding:0 24px;display:flex;align-items:center;height:56px;gap:16px}
.nav-logo{font-size:20px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px;white-space:nowrap}
.nav-logo svg{width:28px;height:28px;fill:var(--accent)}
.nav-search{flex:1;max-width:540px;margin:0 auto}
.nav-search form{display:flex}
.nav-search input{flex:1;background:var(--bg);border:1px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);padding:6px 12px;color:var(--text);font-size:14px;outline:none}
.nav-search input:focus{border-color:var(--accent)}
.nav-search button{background:var(--bg3);border:1px solid var(--border);border-radius:0 var(--radius) var(--radius) 0;padding:6px 16px;cursor:pointer;color:var(--text2);font-size:14px}
.nav-actions{display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border-radius:var(--radius);border:none;cursor:pointer;font-size:14px;font-weight:500;transition:background .15s}
.btn-primary{background:var(--accent);color:#000}.btn-primary:hover{background:#5cb8ff}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg3)}
.btn-ghost{background:transparent;color:var(--text2);padding:8px}.btn-ghost:hover{color:var(--text)}

/* HERO */
.hero{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);padding:48px 24px;text-align:center}
.hero h1{font-size:28px;margin-bottom:8px}
.hero p{color:var(--text2);font-size:16px;max-width:560px;margin:0 auto 20px}
.hero .btn{font-size:16px;padding:10px 24px}

/* CONTAINER */
.container{max-width:1280px;margin:0 auto;padding:24px}
.section-title{font-size:18px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:8px}

/* VIDEO GRID */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin-bottom:32px}
.video-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;transition:transform .15s,box-shadow .15s;cursor:pointer}
.video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.video-thumb{aspect-ratio:16/9;position:relative;overflow:hidden}
.video-thumb .placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:40px;color:rgba(255,255,255,.3)}
.thumb-1{background:linear-gradient(135deg,#2d1b69,#11998e)}
.thumb-2{background:linear-gradient(135deg,#2c3e50,#4ca1af)}
.thumb-3{background:linear-gradient(135deg,#1f1c2c,#928dab)}
.thumb-4{background:linear-gradient(135deg,#0f2027,#203a43,#2c5364)}
.thumb-5{background:linear-gradient(135deg,#200122,#6f0000)}
.thumb-6{background:linear-gradient(135deg,#1a2a6c,#b21f1f,#fdbb2d)}
.thumb-7{background:linear-gradient(135deg,#134e5e,#71b280)}
.thumb-8{background:linear-gradient(135deg,#0f0c29,#302b63,#24243e)}
.video-duration{position:absolute;bottom:6px;right:6px;background:rgba(0,0,0,.8);color:#fff;font-size:12px;padding:2px 6px;border-radius:3px}
.video-info{padding:10px 12px}
.video-title{font-size:14px;font-weight:500;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:6px;color:var(--text2);font-size:12px;margin-top:4px}

/* CATEGORIES */
.categories{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.cat-chip{background:var(--bg3);color:var(--text);padding:6px 14px;border-radius:20px;font-size:13px;cursor:pointer;border:none;transition:background .15s}
.cat-chip:hover,.cat-chip.active{background:var(--text);color:var(--bg)}

/* AUTH FORMS */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 56px);padding:24px}
.auth-card{background:var(--surface);border-radius:12px;padding:32px;width:100%;max-width:400px;box-shadow:var(--shadow)}
.auth-card h2{font-size:22px;margin-bottom:4px}
.auth-card .subtitle{color:var(--text2);font-size:14px;margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px}
.form-group input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;color:var(--text);font-size:14px;outline:none;transition:border .15s}
.form-group input:focus{border-color:var(--accent)}
.form-check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text2);margin-bottom:16px}
.form-check input{width:auto}
.auth-card .btn{width:100%;padding:10px;font-size:15px;margin-bottom:12px}
.auth-divider{text-align:center;color:var(--text2);font-size:13px;margin:16px 0;position:relative}
.auth-divider::before,.auth-divider::after{content:"";position:absolute;top:50%;width:calc(50% - 20px);height:1px;background:var(--border)}
.auth-divider::before{left:0}.auth-divider::after{right:0}
.auth-footer{text-align:center;font-size:13px;color:var(--text2);margin-top:16px}
.error-msg{background:rgba(255,68,68,.1);border:1px solid rgba(255,68,68,.3);color:var(--red);padding:8px 12px;border-radius:var(--radius);font-size:13px;margin-bottom:16px;display:none}

/* FOOTER */
.footer{background:var(--bg2);border-top:1px solid var(--border);padding:24px;margin-top:48px}
.footer-inner{max-width:1280px;margin:0 auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
.footer-col h4{font-size:14px;margin-bottom:8px}
.footer-col a{display:block;color:var(--text2);font-size:13px;padding:2px 0}.footer-col a:hover{color:var(--text)}
.footer-bottom{max-width:1280px;margin:16px auto 0;padding-top:16px;border-top:1px solid var(--border);text-align:center;color:var(--text2);font-size:12px}

/* RESPONSIVE */
@media(max-width:768px){
  .nav{padding:0 12px;gap:8px}
  .nav-search{display:none}
  .container{padding:16px}
  .hero{padding:32px 16px}
  .hero h1{font-size:22px}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .footer-inner{flex-direction:column;gap:16px}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
}