/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-primary:#0a0e1a;--bg-secondary:#111827;
  --glass-bg:rgba(255,255,255,0.05);--glass-border:rgba(255,255,255,0.1);
  --accent:#3b82f6;--accent-glow:rgba(59,130,246,0.4);
  --accent2:#8b5cf6;--accent3:#06b6d4;
  --success:#10b981;--danger:#ef4444;--warning:#f59e0b;
  --text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;
  --radius:16px;--radius-sm:10px;--radius-xs:6px;
  --shadow:0 8px 32px rgba(0,0,0,0.3);
  --transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;line-height:1.6}

/* ===== PARTICLES BG ===== */
#particles-bg{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none;overflow:hidden}
#particles-bg::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 20% 50%,rgba(59,130,246,0.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 20%,rgba(139,92,246,0.06) 0%,transparent 50%),radial-gradient(ellipse at 50% 80%,rgba(6,182,212,0.05) 0%,transparent 50%);animation:bgFloat 20s ease-in-out infinite}
@keyframes bgFloat{0%,100%{transform:translate(0,0) rotate(0)}50%{transform:translate(-2%,2%) rotate(1deg)}}

/* ===== GLASS CARD ===== */
.glass-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:var(--shadow);transition:var(--transition)}
.glass-card:hover{border-color:rgba(255,255,255,0.15);box-shadow:0 12px 40px rgba(0,0,0,0.4)}

/* ===== HEADER ===== */
.main-header,.admin-header{position:relative;z-index:10;background:rgba(10,14,26,0.9);border-bottom:1px solid var(--glass-border);backdrop-filter:blur(20px);padding:16px 0}
.header-content{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.header-left{display:flex;align-items:center;gap:16px}
.header-logo{width:56px;height:56px;object-fit:contain;filter:drop-shadow(0 0 8px var(--accent-glow));transition:var(--transition)}
.header-logo:hover{transform:scale(1.1) rotate(5deg)}
.header-text h1{font-family:'Outfit',sans-serif;font-size:1.4rem;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--accent2),var(--accent3));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:0.5px}
.header-subtitle{font-size:0.8rem;color:var(--text-secondary);font-weight:400}
.header-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.admin-badge{background:linear-gradient(135deg,var(--accent),var(--accent2));padding:6px 14px;border-radius:20px;font-size:0.8rem;font-weight:600;display:flex;align-items:center;gap:6px}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:0.85rem;cursor:pointer;border:none;transition:var(--transition);text-decoration:none;font-family:'Inter',sans-serif}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 4px 15px var(--accent-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px var(--accent-glow)}
.btn-danger{background:linear-gradient(135deg,var(--danger),#dc2626);color:#fff}
.btn-danger:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(239,68,68,0.4)}
.btn-outline{background:transparent;border:1px solid var(--glass-border);color:var(--text-primary)}
.btn-outline:hover{background:var(--glass-bg);border-color:var(--accent)}
.btn-view{background:linear-gradient(135deg,var(--accent3),#0891b2);color:#fff}
.btn-download{background:linear-gradient(135deg,var(--success),#059669);color:#fff}
.btn-sm{padding:6px 12px;font-size:0.75rem;border-radius:var(--radius-xs)}
.btn-full{width:100%;justify-content:center;padding:12px}

/* ===== MAIN CONTAINER ===== */
.main-container{position:relative;z-index:1;max-width:1000px;margin:0 auto;padding:40px 24px 60px}
.admin-container{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:30px 24px 60px}

/* ===== COUNTDOWN ===== */
.countdown-card{padding:50px 40px;text-align:center;animation:fadeInUp 0.8s ease}
.countdown-header h2{font-family:'Outfit',sans-serif;font-size:1.8rem;margin:16px 0 8px;display:flex;align-items:center;justify-content:center;gap:10px}
.countdown-header p{color:var(--text-secondary);margin-bottom:16px}
.target-date{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,rgba(59,130,246,0.15),rgba(139,92,246,0.15));padding:10px 24px;border-radius:30px;font-weight:600;font-size:1rem;border:1px solid rgba(59,130,246,0.2);color:var(--accent3)}
.pulse-dot{width:10px;height:10px;background:var(--accent);border-radius:50%;margin:0 auto;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.5;transform:scale(1.5)}}
.countdown-timer{display:flex;justify-content:center;align-items:center;gap:12px;margin:40px 0 30px;flex-wrap:wrap}
.time-block{text-align:center}
.time-value{font-family:'Outfit',sans-serif;font-size:3.5rem;font-weight:800;background:linear-gradient(180deg,#fff 0%,var(--accent3) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;min-width:90px;padding:20px 10px;background-color:rgba(255,255,255,0.03);border:1px solid var(--glass-border);border-radius:var(--radius);position:relative}
.time-label{font-size:0.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:2px;margin-top:8px;font-weight:600}
.time-separator{font-size:2.5rem;color:var(--accent);font-weight:700;animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}
.countdown-message{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--text-secondary);font-size:0.85rem;padding:12px;background:rgba(59,130,246,0.08);border-radius:var(--radius-sm);border:1px solid rgba(59,130,246,0.15)}

/* ===== STATUS CARDS ===== */
.status-card,.open-card{padding:50px 40px;text-align:center;animation:fadeInUp 0.8s ease}
.status-icon{font-size:4rem;margin-bottom:20px;color:var(--accent)}
.status-icon.success{color:var(--success)}
.closed-card .status-icon{color:var(--danger)}
.status-card h2,.open-card h2{font-family:'Outfit',sans-serif;font-size:1.8rem;margin-bottom:12px}
.status-card p,.open-card p{color:var(--text-secondary);max-width:500px;margin:0 auto}

/* ===== FILES GRID (public) ===== */
.files-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;margin-top:24px}
.file-card{padding:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;animation:fadeInUp 0.5s ease}
.file-icon{width:50px;height:50px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}
.file-icon.pdf{background:rgba(239,68,68,0.15);color:var(--danger)}
.file-icon.image{background:rgba(59,130,246,0.15);color:var(--accent)}
.file-info{flex:1;min-width:150px}
.file-name{font-size:0.9rem;font-weight:600;word-break:break-all}
.file-meta{font-size:0.75rem;color:var(--text-muted);margin-top:4px;display:block}
.file-actions{display:flex;gap:8px;flex-wrap:wrap}
.empty-state{padding:60px;text-align:center;color:var(--text-muted);font-size:3rem;margin-top:24px}
.empty-state p{font-size:1rem;margin-top:12px}

/* ===== ADMIN STATS ===== */
.admin-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{padding:20px;display:flex;align-items:center;gap:16px;animation:fadeInUp 0.5s ease}
.stat-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:linear-gradient(135deg,rgba(59,130,246,0.2),rgba(139,92,246,0.2));display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--accent);flex-shrink:0}
.stat-icon.active{background:linear-gradient(135deg,rgba(16,185,129,0.2),rgba(6,182,212,0.2));color:var(--success)}
.stat-icon.inactive{background:linear-gradient(135deg,rgba(239,68,68,0.2),rgba(245,158,11,0.2));color:var(--danger)}
.stat-info h3{font-family:'Outfit',sans-serif;font-size:1.3rem;font-weight:700}
.stat-info p{font-size:0.75rem;color:var(--text-muted)}

/* ===== ADMIN GRID ===== */
.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}
.admin-section{padding:28px;animation:fadeInUp 0.5s ease}
.admin-section.full-width{width:100%;margin-bottom:24px}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--glass-border)}
.section-header h2{font-family:'Outfit',sans-serif;font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:8px}
.section-header h2 i{color:var(--accent)}
.file-count{font-size:0.8rem;color:var(--text-muted);background:var(--glass-bg);padding:4px 12px;border-radius:20px}

/* ===== UPLOAD ZONE ===== */
.upload-zone{border:2px dashed var(--glass-border);border-radius:var(--radius);padding:40px;text-align:center;cursor:pointer;transition:var(--transition);position:relative}
.upload-zone:hover,.upload-zone.dragover{border-color:var(--accent);background:rgba(59,130,246,0.05)}
.upload-icon{font-size:2.5rem;color:var(--accent);margin-bottom:12px}
.upload-content p{color:var(--text-secondary);margin-bottom:6px}
.browse-link{color:var(--accent);font-weight:600;text-decoration:underline}
.upload-hint{font-size:0.75rem;color:var(--text-muted)}
.upload-progress{margin-top:16px}
.progress-bar{width:100%;height:6px;background:var(--glass-bg);border-radius:3px;overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:3px;transition:width 0.3s;width:0%}
#progress-text{font-size:0.8rem;color:var(--text-secondary);margin-top:6px;display:block}

/* ===== FORMS ===== */
.form-group{margin-bottom:18px}
.form-group label{display:flex;align-items:center;gap:6px;font-size:0.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px}
.form-control{width:100%;padding:10px 14px;background:rgba(255,255,255,0.05);border:1px solid var(--glass-border);border-radius:var(--radius-xs);color:var(--text-primary);font-size:0.9rem;font-family:'Inter',sans-serif;transition:var(--transition);outline:none}
.form-control:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
select.form-control{cursor:pointer;-webkit-appearance:none}

/* ===== FILES TABLE ===== */
.files-table-wrapper{overflow-x:auto}
.files-table{width:100%;border-collapse:collapse}
.files-table th{padding:12px 14px;text-align:left;font-size:0.75rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);border-bottom:1px solid var(--glass-border);font-weight:600}
.files-table td{padding:12px 14px;border-bottom:1px solid rgba(255,255,255,0.03);font-size:0.85rem;vertical-align:middle}
.files-table tr{transition:var(--transition)}
.files-table tbody tr:hover{background:rgba(59,130,246,0.05)}
.file-preview-img{width:48px;height:48px;object-fit:cover;border-radius:var(--radius-xs);border:1px solid var(--glass-border)}
.file-preview-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-xs);font-size:1.4rem}
.file-preview-icon.pdf{background:rgba(239,68,68,0.15);color:var(--danger)}
.file-name-cell{font-weight:500;max-width:250px;word-break:break-all}
.badge{padding:3px 10px;border-radius:20px;font-size:0.7rem;font-weight:700;text-transform:uppercase}
.badge-pdf{background:rgba(239,68,68,0.15);color:var(--danger)}
.badge-img{background:rgba(59,130,246,0.15);color:var(--accent)}
.action-btns{display:flex;gap:6px}
.empty-row td{text-align:center;padding:40px}
.empty-table{color:var(--text-muted)}
.empty-table i{font-size:2rem;margin-bottom:8px;display:block}

/* ===== NISN SEARCH (Public) ===== */
.nisn-section{margin-top:40px;padding:40px;text-align:center;animation:fadeInUp 0.8s ease}
.nisn-header{margin-bottom:30px}
.nisn-icon-wrap{width:64px;height:64px;background:rgba(59,130,246,0.1);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.8rem;color:var(--accent3);border:1px solid rgba(59,130,246,0.2)}
.nisn-header h2{font-family:'Outfit',sans-serif;font-size:1.5rem;margin-bottom:8px}
.nisn-header p{color:var(--text-secondary);font-size:0.9rem}
.nisn-search-form{max-width:500px;margin:0 auto}
.nisn-input-group{display:flex;background:rgba(255,255,255,0.03);border:1px solid var(--glass-border);border-radius:var(--radius);padding:8px;gap:8px;transition:var(--transition);align-items:center}
.nisn-input-group:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-glow)}
.nisn-input-group i{margin-left:14px;color:var(--text-muted)}
.nisn-input-group input{flex:1;background:transparent;border:none;color:var(--text-primary);padding:10px;font-size:1rem;font-family:'Inter',sans-serif;outline:none}
.nisn-loading{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:20px;color:var(--text-secondary)}
.spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,0.1);border-top-color:var(--accent);border-radius:50%;animation:spin 0.8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.nisn-error{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:20px;color:var(--danger);font-size:0.9rem;background:rgba(239,68,68,0.1);padding:12px;border-radius:var(--radius-sm);border:1px solid rgba(239,68,68,0.2)}
.nisn-result{margin-top:30px}
.student-card{background:rgba(255,255,255,0.03);border:1px solid var(--glass-border);border-radius:var(--radius);padding:30px;display:flex;align-items:center;gap:24px;text-align:left;flex-wrap:wrap}
.student-avatar{width:70px;height:70px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2rem;color:#fff;box-shadow:0 8px 20px var(--accent-glow)}
.student-info{flex:1;min-width:200px}
.student-info h3{font-family:'Outfit',sans-serif;font-size:1.4rem;margin-bottom:8px;color:#fff}
.student-details{display:flex;flex-wrap:wrap;gap:16px;color:var(--text-secondary);font-size:0.85rem}
.student-details span{display:flex;align-items:center;gap:6px}
.student-details i{color:var(--accent)}
.student-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-lg{padding:12px 24px;font-size:0.95rem}

/* ===== LOGIN ===== */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-container{position:relative;z-index:1;width:100%;max-width:420px;padding:24px}
.login-card{padding:40px 32px}
.login-header{text-align:center;margin-bottom:28px}
.login-logo{width:80px;height:80px;object-fit:contain;margin-bottom:16px;filter:drop-shadow(0 0 12px var(--accent-glow))}
.login-header h2{font-family:'Outfit',sans-serif;font-size:1.5rem;margin-bottom:6px}
.login-header p{color:var(--text-secondary);font-size:0.85rem}
.login-form{margin-bottom:16px}
.login-footer{text-align:center}
.login-footer a{color:var(--text-muted);font-size:0.8rem;text-decoration:none;transition:var(--transition)}
.login-footer a:hover{color:var(--accent)}
.alert{padding:10px 14px;border-radius:var(--radius-xs);margin-bottom:16px;font-size:0.85rem;display:flex;align-items:center;gap:8px}
.alert-error{background:rgba(239,68,68,0.15);border:1px solid rgba(239,68,68,0.3);color:var(--danger)}

/* ===== TOAST ===== */
.toast{position:fixed;bottom:30px;right:30px;background:var(--bg-secondary);border:1px solid var(--glass-border);padding:14px 24px;border-radius:var(--radius-sm);z-index:9999;transform:translateY(100px);opacity:0;transition:var(--transition);font-size:0.85rem;box-shadow:0 10px 40px rgba(0,0,0,0.5)}
.toast.show{transform:translateY(0);opacity:1}
.toast.success{border-color:var(--success);background:rgba(16,185,129,0.1)}
.toast.error{border-color:var(--danger);background:rgba(239,68,68,0.1)}

/* ===== MODAL ===== */
.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);z-index:9998;display:none;align-items:center;justify-content:center;backdrop-filter:blur(8px);padding:20px}
.modal.show{display:flex}
.modal-content{padding:40px;text-align:center;max-width:450px;width:100%;animation:modalPop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275)}
@keyframes modalPop{from{opacity:0;transform:scale(0.8)}to{opacity:1;transform:scale(1)}}
.modal-icon{font-size:3.5rem;color:var(--warning);margin-bottom:20px;filter:drop-shadow(0 0 10px rgba(245,158,11,0.3))}
.modal-content h3{font-family:'Outfit',sans-serif;font-size:1.5rem;margin-bottom:12px}
.modal-content p{color:var(--text-secondary);font-size:0.95rem;margin-bottom:30px;line-height:1.5}
.modal-actions{display:flex;gap:16px;justify-content:center}
.modal-actions .btn{min-width:120px;justify-content:center}

/* ===== FOOTER ===== */
.main-footer{position:relative;z-index:1;text-align:center;padding:24px;color:var(--text-muted);font-size:0.8rem;border-top:1px solid var(--glass-border)}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .header-text h1{font-size:1rem}
  .header-right{width:100%;justify-content:flex-end}
  .admin-grid{grid-template-columns:1fr}
  .countdown-timer{gap:8px}
  .time-value{font-size:2.2rem;min-width:60px;padding:14px 8px}
  .time-separator{font-size:1.5rem}
  .files-grid{grid-template-columns:1fr}
  .admin-stats{grid-template-columns:repeat(2,1fr)}
  .countdown-card{padding:30px 20px}
  .target-date{font-size:0.85rem;padding:8px 16px}
}
@media(max-width:480px){
  .admin-stats{grid-template-columns:1fr}
  .header-logo{width:40px;height:40px}
  .header-text h1{font-size:0.9rem}
  .modal-actions{flex-direction:column}
}