/* ═══════════════════════════════════════════════════
   WLMS — Warlton Learning Management System
   Student-facing stylesheet
═══════════════════════════════════════════════════ */
:root {
  --primary:       #1a3c5e;
  --primary-light: #2563a8;
  --accent:        #e8a020;
  --accent-light:  #fbbf24;
  --bg:            #f0f4f8;
  --surface:       #ffffff;
  --surface2:      #f8fafc;
  --border:        #e2e8f0;
  --text:          #1e293b;
  --text-muted:    #64748b;
  --success:       #16a34a;
  --danger:        #dc2626;
  --warning:       #d97706;
  --info:          #0284c7;
  --sidebar-w:     260px;
  --topbar-h:      64px;
  --radius:        12px;
  --radius-sm:     8px;
  --shadow:        0 1px 4px rgba(0,0,0,.08);
  --shadow-md:     0 4px 20px rgba(0,0,0,.1);
}

*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Plus Jakarta Sans',sans-serif;background:var(--bg);color:var(--text);font-size:14px;min-height:100vh;}

/* ── SIDEBAR ─────────────────────────────────────── */
.lms-sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:linear-gradient(180deg,#0f2236 0%,#1a3c5e 100%);
  display:flex;flex-direction:column;z-index:200;
  transition:transform .25s ease;overflow-y:auto;overflow-x:hidden;
}
.sidebar-brand{padding:24px 20px 20px;border-bottom:1px solid rgba(255,255,255,.08);}
.brand-badge{display:inline-flex;align-items:center;gap:10px;}
.brand-icon{width:42px;height:42px;background:var(--accent);border-radius:10px;
  display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;}
.brand-name{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.5px;}
.brand-sub{font-size:10px;color:var(--accent);letter-spacing:2px;text-transform:uppercase;font-weight:600;}

.student-card{margin:16px;padding:14px;background:rgba(255,255,255,.07);border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.1);}
.student-avatar{width:42px;height:42px;border-radius:50%;background:var(--accent);
  color:#fff;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.student-name{font-size:13.5px;font-weight:600;color:#fff;line-height:1.3;}
.student-id{font-size:11px;color:rgba(255,255,255,.5);}

.nav-section{font-size:10px;font-weight:700;letter-spacing:1.5px;color:rgba(255,255,255,.3);
  padding:16px 20px 6px;text-transform:uppercase;}
.nav-link{display:flex;align-items:center;gap:12px;padding:10px 20px;
  color:rgba(255,255,255,.65);text-decoration:none;font-size:13.5px;font-weight:500;
  border-radius:0;transition:all .15s;position:relative;}
.nav-link:hover{background:rgba(255,255,255,.07);color:#fff;}
.nav-link.active{background:var(--primary-light);color:#fff;}
.nav-link .nav-icon{width:20px;text-align:center;font-size:14px;flex-shrink:0;}
.nav-link .badge-dot{position:absolute;right:16px;top:50%;transform:translateY(-50%);
  background:var(--accent);color:#fff;font-size:10px;font-weight:700;
  padding:2px 6px;border-radius:10px;min-width:18px;text-align:center;}

/* ── TOPBAR ──────────────────────────────────────── */
.lms-topbar{
  position:fixed;top:0;left:var(--sidebar-w);right:0;height:var(--topbar-h);
  background:#fff;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 28px;z-index:100;box-shadow:var(--shadow);transition:left .25s;
}
.topbar-title{font-size:16px;font-weight:700;color:var(--primary);}
.topbar-right{display:flex;align-items:center;gap:16px;}
.notif-btn{position:relative;width:38px;height:38px;border-radius:var(--radius-sm);
  background:var(--surface2);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);}
.notif-btn:hover{background:var(--bg);}
.notif-badge{position:absolute;top:-4px;right:-4px;background:var(--danger);
  color:#fff;font-size:10px;font-weight:700;width:18px;height:18px;
  border-radius:50%;display:flex;align-items:center;justify-content:center;}
.sidebar-toggle-btn{display:none;background:none;border:none;font-size:20px;color:var(--text-muted);cursor:pointer;}

/* ── MAIN WRAPPER ────────────────────────────────── */
.lms-main{margin-left:var(--sidebar-w);padding-top:var(--topbar-h);min-height:100vh;}
.page-body{padding:28px;}

/* ── PAGE HEADER ─────────────────────────────────── */
.page-header{margin-bottom:24px;}
.page-header h1{font-size:22px;font-weight:800;color:var(--primary);margin-bottom:4px;}
.page-header p{color:var(--text-muted);font-size:14px;}

/* ── CARDS ───────────────────────────────────────── */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);}
.card-header{padding:16px 20px;font-weight:700;font-size:14px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card-body{padding:20px;}
.card-body.p-0{padding:0;}

/* ── STAT CARDS ──────────────────────────────────── */
.stat-card{border-radius:var(--radius);padding:22px;color:#fff;position:relative;overflow:hidden;}
.stat-card .val{font-size:28px;font-weight:800;line-height:1;}
.stat-card .lbl{font-size:12px;opacity:.85;margin-top:6px;font-weight:500;}
.stat-card .ico{position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:44px;opacity:.15;}
.sc-blue  {background:linear-gradient(135deg,#1a3c5e,#2563a8);}
.sc-green {background:linear-gradient(135deg,#15803d,#16a34a);}
.sc-amber {background:linear-gradient(135deg,#92400e,#d97706);}
.sc-purple{background:linear-gradient(135deg,#5b21b6,#7c3aed);}
.sc-teal  {background:linear-gradient(135deg,#0f766e,#0d9488);}

/* ── SESSION CARDS ───────────────────────────────── */
.session-card{border-radius:var(--radius);border:1px solid var(--border);background:#fff;
  padding:20px;transition:transform .2s,box-shadow .2s;}
.session-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.session-card.ongoing{border-left:4px solid #16a34a;}
.session-card.upcoming{border-left:4px solid #2563a8;}
.session-card.completed{border-left:4px solid var(--text-muted);opacity:.8;}
.session-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;
  border-radius:20px;font-size:11px;font-weight:700;letter-spacing:.3px;}
.badge-ongoing {background:#dcfce7;color:#16a34a;}
.badge-upcoming{background:#dbeafe;color:#2563a8;}
.badge-completed{background:#f1f5f9;color:#64748b;}
.badge-live{background:#fee2e2;color:#dc2626;}
.pulse{width:8px;height:8px;border-radius:50%;background:#16a34a;display:inline-block;
  animation:pulse 1.5s infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.5;transform:scale(.85);}}

.join-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;
  background:linear-gradient(135deg,#16a34a,#15803d);color:#fff;
  border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:700;
  text-decoration:none;cursor:pointer;transition:opacity .15s;}
.join-btn:hover{opacity:.9;color:#fff;}
.join-btn.disabled-btn{background:linear-gradient(135deg,#94a3b8,#64748b);cursor:not-allowed;}

/* ── COURSE CARDS ────────────────────────────────── */
.course-card{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);
  background:#fff;transition:transform .2s,box-shadow .2s;}
.course-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.course-card-header{padding:20px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;}
.course-card-body{padding:18px;}
.progress-bar-wrap{background:#e2e8f0;border-radius:10px;height:8px;overflow:hidden;margin-top:6px;}
.progress-bar-fill{height:100%;border-radius:10px;background:linear-gradient(90deg,var(--accent),var(--accent-light));transition:width .4s ease;}

/* ── CONTENT ITEMS ───────────────────────────────── */
.content-item{display:flex;align-items:center;gap:14px;padding:14px 16px;
  border-radius:var(--radius-sm);border:1px solid var(--border);background:#fff;
  cursor:pointer;transition:all .15s;text-decoration:none;color:var(--text);}
.content-item:hover{border-color:var(--primary-light);box-shadow:0 2px 8px rgba(37,99,168,.1);}
.content-item.completed{background:#f0fdf4;border-color:#bbf7d0;}
.content-icon{width:44px;height:44px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.ci-video   {background:#dbeafe;color:#2563a8;}
.ci-doc     {background:#fef9c3;color:#a16207;}
.ci-link    {background:#f3e8ff;color:#7c3aed;}
.ci-assign  {background:#fce7f3;color:#be185d;}
.content-title{font-weight:600;font-size:13.5px;margin-bottom:2px;}
.content-meta {font-size:11.5px;color:var(--text-muted);}
.content-check{margin-left:auto;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.check-done{background:#dcfce7;color:#16a34a;}
.check-todo{background:#f1f5f9;color:#94a3b8;}

/* ── ANNOUNCEMENT CARDS ──────────────────────────── */
.announce-card{border-radius:var(--radius-sm);padding:16px;border:1px solid var(--border);
  background:#fff;border-left:4px solid var(--primary-light);}
.announce-card.urgent{border-left-color:var(--danger);}
.announce-card.course{border-left-color:var(--accent);}
.announce-title{font-weight:700;font-size:14px;margin-bottom:4px;}
.announce-body{font-size:13px;color:var(--text-muted);line-height:1.6;}
.announce-meta{font-size:11px;color:#94a3b8;margin-top:8px;}

/* ── GOOGLE DRIVE EMBED ──────────────────────────── */
.drive-embed-wrap{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);
  background:#000;aspect-ratio:16/9;width:100%;}
.drive-embed-wrap iframe{width:100%;height:100%;border:none;}

/* ── ATTENDANCE BADGE ────────────────────────────── */
.att-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;
  border-radius:20px;font-size:11px;font-weight:600;}
.att-present {background:#dcfce7;color:#16a34a;}
.att-absent  {background:#fee2e2;color:#dc2626;}
.att-late    {background:#fef9c3;color:#a16207;}

/* ── LOGIN PAGE ──────────────────────────────────── */
.lms-login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0f2236 0%,#1a3c5e 60%,#2563a8 100%);padding:20px;}
.login-box{background:#fff;border-radius:20px;padding:48px 40px;width:100%;max-width:440px;
  box-shadow:0 20px 60px rgba(0,0,0,.3);}
.login-logo{width:68px;height:68px;background:linear-gradient(135deg,#1a3c5e,#2563a8);
  border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;
  font-size:28px;color:var(--accent);}
.login-title{font-size:24px;font-weight:800;color:var(--primary);text-align:center;margin-bottom:4px;}
.login-sub{text-align:center;color:var(--text-muted);font-size:13px;margin-bottom:32px;}
.login-label{display:block;font-size:12px;font-weight:700;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;}
.login-input{width:100%;padding:13px 16px;border:2px solid var(--border);border-radius:var(--radius-sm);
  font-size:14px;font-family:inherit;outline:none;transition:border-color .15s;}
.login-input:focus{border-color:var(--primary-light);}
.login-btn{width:100%;padding:14px;background:linear-gradient(135deg,#1a3c5e,#2563a8);
  color:#fff;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:700;
  cursor:pointer;font-family:inherit;transition:opacity .15s;margin-top:8px;}
.login-btn:hover{opacity:.9;}
.login-hint{text-align:center;font-size:12px;color:var(--text-muted);margin-top:16px;}

/* ── MISC ────────────────────────────────────────── */
.section-divider{display:flex;align-items:center;gap:12px;margin:24px 0 16px;}
.section-divider span{font-size:13px;font-weight:700;color:var(--text-muted);white-space:nowrap;}
.section-divider::before,.section-divider::after{content:'';flex:1;height:1px;background:var(--border);}
.locked-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:40px;text-align:center;color:var(--text-muted);}
.locked-icon{font-size:48px;margin-bottom:12px;color:#cbd5e1;}

/* ── RESPONSIVE ──────────────────────────────────── */
@media(max-width:768px){
  .lms-sidebar{transform:translateX(-100%);}
  .lms-sidebar.open{transform:translateX(0);}
  .lms-main{margin-left:0;}
  .lms-topbar{left:0;}
  .sidebar-toggle-btn{display:block;}
  .page-body{padding:16px;}
}