/* QBO Hacks - Main Stylesheet */
:root {
  --green: #00C853;
  --green-dark: #009624;
  --accent: #FFD600;
  --dark: #0a0f1e;
  --dark2: #111827;
  --dark3: #1e2a3a;
  --card-bg: #162032;
  --text: #e2e8f0;
  --muted: #8892a4;
  --border: rgba(255,255,255,0.08);
}

* { box-sizing: border-box; }
body { font-family: 'Hind Siliguri', sans-serif; background: var(--dark); color: var(--text); }

/* Navbar */
.qbo-navbar { background: rgba(10,15,30,0.97); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); padding: 12px 0; }
.qbo-brand { font-family: 'Syne', sans-serif; font-size: 1.6rem; font-weight: 800; color: #fff !important; }
.brand-q { color: var(--green); }
.brand-accent { color: var(--accent); }
.navbar-nav .nav-link { color: var(--text) !important; font-weight: 500; transition: color .2s; }
.navbar-nav .nav-link:hover { color: var(--green) !important; }

/* Hero */
.hero-section { background: linear-gradient(135deg, var(--dark) 0%, #0d1f35 50%, var(--dark) 100%); padding: 80px 0; position: relative; overflow: hidden; min-height: 85vh; display: flex; align-items: center; }
.hero-bg-pattern { position: absolute; inset: 0; background: radial-gradient(circle at 70% 50%, rgba(0,200,83,0.06) 0%, transparent 60%), radial-gradient(circle at 20% 20%, rgba(255,214,0,0.04) 0%, transparent 40%); }
.min-vh-80 { min-height: 80vh; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(0,200,83,0.1); border: 1px solid rgba(0,200,83,0.3); color: var(--green); padding: 6px 16px; border-radius: 50px; font-size: .85rem; font-weight: 600; }
.hero-title { font-family: 'Syne', sans-serif; font-size: 3rem; font-weight: 800; line-height: 1.2; color: #fff; }
.text-accent { color: var(--accent); }
.hero-desc { font-size: 1.1rem; color: var(--muted); margin-top: 16px; max-width: 500px; }
.hero-stats { display: flex; align-items: center; gap: 24px; }
.stat-item { text-align: center; }
.stat-num { display: block; font-family: 'Syne', sans-serif; font-size: 2rem; font-weight: 800; color: var(--green); }
.stat-label { font-size: .8rem; color: var(--muted); }
.stat-divider { width: 1px; height: 40px; background: var(--border); }
.hero-graphic { position: relative; height: 400px; display: flex; align-items: center; justify-content: center; }
.graphic-circle { position: absolute; border-radius: 50%; }
.c1 { width: 300px; height: 300px; background: radial-gradient(circle, rgba(0,200,83,0.15), transparent); border: 1px solid rgba(0,200,83,0.2); animation: pulse 3s ease-in-out infinite; }
.c2 { width: 200px; height: 200px; background: radial-gradient(circle, rgba(255,214,0,0.1), transparent); border: 1px solid rgba(255,214,0,0.15); animation: pulse 3s ease-in-out infinite 1.5s; }
.graphic-icon { font-size: 5rem; color: var(--green); position: relative; z-index: 2; text-shadow: 0 0 40px rgba(0,200,83,0.4); }
@keyframes pulse { 0%,100%{transform:scale(1);opacity:.8} 50%{transform:scale(1.05);opacity:1} }

/* Buttons */
.btn-accent { background: var(--green); color: #000; font-weight: 700; border: none; transition: all .2s; }
.btn-accent:hover { background: var(--green-dark); color: #fff; transform: translateY(-1px); }

/* Features */
.features-section { background: var(--dark2); }
.feature-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 28px 24px; text-align: center; transition: all .3s; height: 100%; }
.feature-card:hover { border-color: rgba(0,200,83,0.4); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,200,83,0.1); }
.feature-icon { width: 60px; height: 60px; background: rgba(0,200,83,0.1); border: 1px solid rgba(0,200,83,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; color: var(--green); font-size: 1.4rem; }
.feature-card h5 { color: #fff; font-weight: 700; margin-bottom: 8px; }
.feature-card p { color: var(--muted); font-size: .9rem; margin: 0; }

/* Section headers */
.section-badge { background: rgba(0,200,83,0.1); border: 1px solid rgba(0,200,83,0.25); color: var(--green); padding: 5px 14px; border-radius: 50px; font-size: .8rem; font-weight: 600; }
.section-title { font-family: 'Syne', sans-serif; font-size: 2rem; font-weight: 800; color: #fff; margin-top: 10px; }

/* Courses */
.courses-section { background: var(--dark); }
.course-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: all .3s; height: 100%; }
.course-card:hover { border-color: rgba(0,200,83,0.35); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,200,83,0.08); }
.course-thumb { height: 180px; overflow: hidden; position: relative; background: var(--dark3); }
.course-thumb img { width: 100%; height: 100%; object-fit: cover; }
.course-thumb-placeholder { height: 100%; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 3rem; }
.course-price-badge { position: absolute; top: 10px; right: 10px; padding: 4px 12px; border-radius: 50px; font-size: .8rem; font-weight: 700; }
.course-price-badge.free { background: var(--green); color: #000; }
.course-price-badge.paid { background: var(--accent); color: #000; }
.course-body { padding: 20px; }
.course-cat { font-size: .75rem; color: var(--green); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }
.course-title-text { color: #fff; font-weight: 700; margin: 8px 0; font-size: 1rem; }
.course-desc { color: var(--muted); font-size: .85rem; }
.course-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: .85rem; }

/* Notices */
.notices-section { background: var(--dark2); }
.notice-item { display: flex; gap: 16px; background: var(--card-bg); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 12px; transition: border-color .2s; }
.notice-item:hover { border-color: rgba(0,200,83,0.3); }
.notice-icon { width: 44px; height: 44px; background: rgba(255,214,0,0.1); border: 1px solid rgba(255,214,0,0.2); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--accent); flex-shrink: 0; }
.notice-content h6 { color: #fff; font-weight: 700; margin-bottom: 4px; }
.notice-content p { color: var(--muted); font-size: .9rem; margin: 0; }

/* About */
.about-section { background: var(--dark); }
.about-list { list-style: none; padding: 0; }
.about-list li { padding: 8px 0; color: var(--text); display: flex; align-items: center; gap: 10px; }
.about-list li i { color: var(--green); }
.about-graphic { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ag-box { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 24px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 10px; transition: all .3s; }
.ag-box:hover { border-color: rgba(0,200,83,0.35); transform: scale(1.03); }
.ag1 i,.ag3 i { color: var(--green); }
.ag2 i,.ag4 i { color: var(--accent); }
.ag-box span { color: var(--text); font-weight: 600; }

/* Footer */
.qbo-footer { background: var(--dark2); border-top: 1px solid var(--border); padding: 60px 0 24px; }
.footer-brand { font-family: 'Syne', sans-serif; font-size: 1.5rem; font-weight: 800; color: #fff; }
.footer-brand span { color: var(--accent); }
.footer-heading { color: var(--green); font-weight: 700; margin-bottom: 16px; }
.footer-links { list-style: none; padding: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: var(--muted); text-decoration: none; transition: color .2s; }
.footer-links a:hover { color: var(--green); }
.footer-hr { border-color: var(--border); margin: 32px 0 16px; }
.footer-copy { color: var(--muted); font-size: .85rem; }

/* Auth pages */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; background: var(--dark); }
.auth-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 20px; padding: 40px; width: 100%; max-width: 440px; }
.auth-logo { text-align: center; margin-bottom: 24px; }
.auth-logo .logo-text { font-family: 'Syne', sans-serif; font-size: 2rem; font-weight: 800; color: #fff; }
.auth-logo .logo-text span { color: var(--accent); }
.auth-title { font-size: 1.4rem; font-weight: 700; color: #fff; margin-bottom: 4px; }
.auth-sub { color: var(--muted); font-size: .9rem; margin-bottom: 28px; }
.form-label { color: var(--text); font-weight: 600; font-size: .9rem; }
.form-control, .form-select { background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: 12px 16px; }
.form-control:focus, .form-select:focus { background: rgba(255,255,255,0.07); border-color: var(--green); color: var(--text); box-shadow: 0 0 0 3px rgba(0,200,83,0.15); }
.form-control::placeholder { color: var(--muted); }
.btn-auth { background: var(--green); color: #000; font-weight: 700; border: none; border-radius: 10px; padding: 12px; font-size: 1rem; width: 100%; transition: all .2s; }
.btn-auth:hover { background: var(--green-dark); color: #fff; }
.auth-link { color: var(--green); text-decoration: none; font-weight: 600; }
.auth-link:hover { text-decoration: underline; }

/* Dashboard */
.sidebar { background: var(--dark2); width: 260px; min-height: 100vh; position: fixed; left: 0; top: 0; border-right: 1px solid var(--border); z-index: 100; overflow-y: auto; transition: transform .3s; }
.sidebar-logo { padding: 20px 24px; border-bottom: 1px solid var(--border); }
.sidebar-logo .logo-text { font-family: 'Syne', sans-serif; font-size: 1.4rem; font-weight: 800; color: #fff; text-decoration: none; }
.sidebar-logo .logo-text span { color: var(--accent); }
.sidebar-nav { padding: 16px 0; }
.sidebar-section { padding: 12px 24px 6px; font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 700; }
.sidebar-link { display: flex; align-items: center; gap: 12px; padding: 11px 24px; color: var(--muted); text-decoration: none; font-weight: 500; transition: all .2s; font-size: .95rem; }
.sidebar-link i { width: 20px; text-align: center; }
.sidebar-link:hover, .sidebar-link.active { background: rgba(0,200,83,0.08); color: var(--green); border-right: 3px solid var(--green); }
.main-content { margin-left: 260px; min-height: 100vh; background: var(--dark); }
.top-bar { background: var(--dark2); border-bottom: 1px solid var(--border); padding: 16px 28px; display: flex; align-items: center; justify-content: space-between; }
.top-bar-title { font-family: 'Syne', sans-serif; font-size: 1.2rem; font-weight: 700; color: #fff; }
.user-info { display: flex; align-items: center; gap: 10px; }
.user-avatar { width: 38px; height: 38px; background: var(--green); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #000; font-weight: 800; font-size: .9rem; }
.user-name { color: var(--text); font-weight: 600; font-size: .9rem; }
.page-content { padding: 28px; }

/* Stats cards */
.stat-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 24px; display: flex; align-items: center; gap: 16px; transition: all .2s; }
.stat-card:hover { border-color: rgba(0,200,83,0.3); }
.stat-card-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.sc-green { background: rgba(0,200,83,0.1); color: var(--green); }
.sc-yellow { background: rgba(255,214,0,0.1); color: var(--accent); }
.sc-blue { background: rgba(59,130,246,0.1); color: #60a5fa; }
.sc-red { background: rgba(239,68,68,0.1); color: #f87171; }
.stat-card-info h3 { font-family: 'Syne', sans-serif; font-size: 1.8rem; font-weight: 800; color: #fff; margin: 0; }
.stat-card-info p { color: var(--muted); margin: 0; font-size: .85rem; }

/* Tables */
.qbo-table { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.qbo-table .table { margin: 0; color: var(--text); }
.qbo-table .table thead th { background: rgba(255,255,255,0.03); border-bottom: 1px solid var(--border); color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: 1px; padding: 14px 16px; }
.qbo-table .table td { border-color: var(--border); padding: 14px 16px; vertical-align: middle; }
.qbo-table .table tbody tr:hover { background: rgba(255,255,255,0.02); }

/* Badges */
.badge-active { background: rgba(0,200,83,0.15); color: var(--green); border: 1px solid rgba(0,200,83,0.2); padding: 4px 10px; border-radius: 50px; font-size: .75rem; }
.badge-inactive { background: rgba(239,68,68,0.1); color: #f87171; border: 1px solid rgba(239,68,68,0.2); padding: 4px 10px; border-radius: 50px; font-size: .75rem; }
.badge-pending { background: rgba(255,214,0,0.1); color: var(--accent); border: 1px solid rgba(255,214,0,0.2); padding: 4px 10px; border-radius: 50px; font-size: .75rem; }

/* Forms in dashboard */
.qbo-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 24px; }
.qbo-card h5 { color: #fff; font-weight: 700; margin-bottom: 20px; }

/* Live class */
.live-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 24px; height: 100%; transition: all .3s; }
.live-card:hover { border-color: rgba(0,200,83,0.35); }
.live-status { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 50px; font-size: .78rem; font-weight: 700; }
.status-live { background: rgba(239,68,68,0.15); color: #f87171; }
.status-live::before { content:''; width:8px; height:8px; background:#f87171; border-radius:50%; animation: blink 1s infinite; }
.status-upcoming { background: rgba(0,200,83,0.1); color: var(--green); }
.status-ended { background: rgba(100,100,100,0.15); color: var(--muted); }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

/* Mobile responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 2rem; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .hero-stats { gap: 16px; }
  .stat-num { font-size: 1.5rem; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--dark3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--green); }