:root{--primary:#2563eb;--secondary:#7c3aed;--text:#172033;--muted:#65718a;--border:#dfe7f3;--bg:#f4f7fc;--shadow:0 18px 45px rgba(30,64,175,.10)}
*{box-sizing:border-box}body{min-height:100vh;margin:0;color:var(--text);background:radial-gradient(circle at 5% 5%,rgba(37,99,235,.09),transparent 25rem),radial-gradient(circle at 95% 10%,rgba(124,58,237,.08),transparent 28rem),var(--bg);font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}a{text-decoration:none}
.navbar-daihoc{background:rgba(255,255,255,.9);border-bottom:1px solid rgba(218,228,242,.9);backdrop-filter:blur(16px)}
.brand-mark,.feature-icon,.stat-icon{display:inline-grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));box-shadow:0 9px 20px rgba(37,99,235,.22)}.brand-mark{width:42px;height:42px;border-radius:13px;font-size:1.2rem}.brand-copy small{color:var(--muted);font-size:.7rem}
.hero{position:relative;overflow:hidden;padding:clamp(3.5rem,8vw,6.5rem) 0 4.5rem}.hero-badge{display:inline-flex;align-items:center;gap:.55rem;padding:.55rem .85rem;color:#1d4ed8;background:#eaf1ff;border:1px solid #d6e4ff;border-radius:999px;font-size:.82rem;font-weight:700}.hero h1{max-width:820px;margin:1.15rem auto .9rem;font-size:clamp(2.1rem,5vw,4.1rem);font-weight:800;letter-spacing:-.045em;line-height:1.08}.gradient-text{color:transparent;background:linear-gradient(100deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text}.hero-copy{max-width:690px;margin-inline:auto;color:var(--muted);font-size:clamp(1rem,2vw,1.15rem)}
.btn-primary-dh{color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));border:0;box-shadow:0 12px 25px rgba(37,99,235,.22)}.btn-primary-dh:hover{color:#fff;transform:translateY(-1px)}
.stats-wrap{margin-top:-1.7rem;position:relative;z-index:2}.stat-card,.panel,.document-card,.guide-card{background:rgba(255,255,255,.95);border:1px solid var(--border);box-shadow:var(--shadow)}.stat-card{height:100%;padding:1.15rem;border-radius:18px}.stat-icon{width:45px;height:45px;border-radius:14px}.stat-value{font-size:1.25rem;font-weight:800}.stat-label{color:var(--muted);font-size:.78rem}
.section-space{padding:4.5rem 0}.section-title{font-weight:800;letter-spacing:-.025em}.section-subtitle{color:var(--muted)}.panel{border-radius:24px;overflow:hidden}.panel-heading{padding:1.35rem 1.5rem;border-bottom:1px solid var(--border)}.panel-body{padding:1.5rem}
.upload-dropzone{position:relative;padding:2.2rem 1.2rem;text-align:center;background:#f8faff;border:2px dashed #b8cae8;border-radius:19px;cursor:pointer;transition:.2s ease}.upload-dropzone:hover,.upload-dropzone.is-dragging{background:#edf4ff;border-color:var(--primary);transform:translateY(-2px)}.upload-dropzone input{position:absolute;width:1px;height:1px;opacity:0}.upload-icon{font-size:2.25rem;color:var(--primary)}.upload-note{color:var(--muted);font-size:.8rem}.selected-files{display:grid;gap:.55rem;margin-top:1rem}.selected-file{display:flex;align-items:center;gap:.75rem;padding:.7rem .85rem;background:#f7f9fd;border:1px solid var(--border);border-radius:12px;font-size:.84rem}.selected-file .file-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.selected-file .file-size{margin-left:auto;color:var(--muted);white-space:nowrap}
.form-control,.form-select{min-height:46px;border-color:#d7e1ef;border-radius:12px}.form-control:focus,.form-select:focus{border-color:#84aaff;box-shadow:0 0 0 .22rem rgba(37,99,235,.11)}.filters{padding:1rem;background:#fff;border:1px solid var(--border);border-radius:18px}.search-wrap{position:relative}.search-wrap i{position:absolute;top:50%;left:1rem;color:var(--muted);transform:translateY(-50%)}.search-wrap input{padding-left:2.65rem}
.document-card{display:flex;flex-direction:column;height:100%;padding:1.15rem;border-radius:18px;transition:.2s ease}.document-card:hover{transform:translateY(-4px);box-shadow:0 22px 48px rgba(30,64,175,.15)}.file-icon{display:grid;place-items:center;width:48px;height:48px;flex:0 0 48px;color:var(--primary);background:#eaf1ff;border-radius:14px;font-size:1.25rem}.document-title{display:-webkit-box;overflow:hidden;font-weight:750;line-height:1.4;-webkit-line-clamp:2;-webkit-box-orient:vertical}.document-meta{color:var(--muted);font-size:.78rem}.category-badge{color:#5b21b6;background:#f1eaff;border-radius:999px;font-size:.72rem;font-weight:700}.document-description{display:-webkit-box;overflow:hidden;color:var(--muted);font-size:.84rem;-webkit-line-clamp:2;-webkit-box-orient:vertical}.empty-state{padding:4rem 1rem;text-align:center;color:var(--muted)}.empty-state i{display:block;margin-bottom:.7rem;color:#a8b8d3;font-size:3rem}.guide-card{height:100%;padding:1.4rem;border-radius:18px}.feature-icon{width:44px;height:44px;margin-bottom:1rem;border-radius:14px}.site-footer{padding:2rem 0;color:var(--muted);border-top:1px solid var(--border)}
@media(max-width:767.98px){.hero{padding-top:2.5rem}.hero-actions .btn{width:100%}.stats-wrap{margin-top:-1rem}.section-space{padding:3rem 0}.panel-heading,.panel-body{padding:1.1rem}.navbar-nav{padding-top:.75rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}

/* Component styles used by the PHP view */
.site-nav{background:rgba(255,255,255,.92);border-bottom:1px solid var(--border);backdrop-filter:blur(14px)}.brand-icon{display:grid;place-items:center;width:42px;height:42px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:13px}.brand-name{font-size:.9rem}.brand-sub{color:var(--muted);font-size:.68rem}.nav-link{color:var(--text);font-weight:600}.nav-cta,.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));border:0}
.hero-card{padding:clamp(1.5rem,5vw,4rem);color:#fff;background:linear-gradient(135deg,#1d4ed8,#6d28d9);border-radius:30px;box-shadow:0 28px 60px rgba(49,46,129,.25)}.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em}.hero-card h1{margin:1rem 0;font-size:clamp(2.2rem,5vw,4.5rem);font-weight:850;line-height:1.02}.hero-card h1 span{color:#bfdbfe}.hero-card p{max-width:680px;color:#e0e7ff}.hero-actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.5rem}.hero-visual{position:relative;display:grid;place-items:center;min-height:270px;text-align:center;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:24px}.hero-visual>*{display:block}.visual-icon{font-size:4rem}.hero-visual strong{font-size:1.2rem}.hero-visual small{color:#dbeafe}.floating{position:absolute;padding:.55rem .7rem;background:#fff;color:var(--text);border-radius:12px;font-size:.75rem;font-weight:800;box-shadow:0 12px 25px rgba(0,0,0,.15)}.f1{top:15%;left:5%}.f2{right:5%;top:25%}.f3{bottom:10%;left:15%}
.stats{position:relative;margin-top:-1.5rem}.stats .row>div>div{display:flex;flex-direction:column;height:100%;padding:1rem 1.2rem;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}.stats strong{font-size:1.3rem}.stats span{color:var(--muted);font-size:.75rem}.section-head{margin-bottom:1.5rem}.section-head>span{color:var(--primary);font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.section-head h2{margin:.25rem 0;font-weight:800}.section-head p{margin:0;color:var(--muted)}
.filter-bar{display:grid;grid-template-columns:minmax(220px,1fr) 220px 180px;gap:.75rem;margin-bottom:1.2rem;padding:1rem;background:#fff;border:1px solid var(--border);border-radius:18px}.search-box{position:relative}.search-box i{position:absolute;left:1rem;top:50%;color:var(--muted);transform:translateY(-50%)}.search-box input{width:100%;height:46px;padding:0 1rem 0 2.7rem;border:1px solid #d7e1ef;border-radius:12px;outline:0}.search-box input:focus{border-color:#84aaff;box-shadow:0 0 0 .22rem rgba(37,99,235,.11)}
.document-card{flex-direction:row;gap:1rem}.file-icon{flex-direction:column}.file-icon small{font-size:.55rem;font-weight:800}.tone-red{color:#dc2626;background:#fee2e2}.tone-blue{color:#2563eb;background:#dbeafe}.tone-green{color:#059669;background:#d1fae5}.tone-orange{color:#ea580c;background:#ffedd5}.tone-purple{color:#7c3aed;background:#ede9fe}.document-content{display:flex;flex:1;min-width:0;flex-direction:column}.document-content h3{margin:.6rem 0 .35rem;font-size:1rem;font-weight:800}.doc-tags{display:flex;flex-wrap:wrap;gap:.35rem}.doc-tags span{padding:.24rem .48rem;color:#5b21b6;background:#f1eaff;border-radius:999px;font-size:.68rem;font-weight:700}.doc-meta{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:auto;padding-top:.8rem;color:var(--muted);font-size:.72rem}.doc-meta i{margin-right:.25rem}.download-btn{display:flex;align-items:center;margin-top:.8rem;color:var(--primary);font-size:.82rem;font-weight:750}.download-btn span{min-width:0;margin-left:auto;overflow:hidden;color:var(--muted);font-size:.68rem;text-overflow:ellipsis;white-space:nowrap}
.upload-section{background:#eef3ff}.upload-shell{overflow:hidden;background:#fff;border:1px solid var(--border);border-radius:26px;box-shadow:var(--shadow)}.upload-info{height:100%;padding:clamp(1.5rem,4vw,3rem);color:#fff;background:linear-gradient(145deg,#1d4ed8,#6d28d9)}.upload-info h2{margin:1rem 0;font-weight:800}.upload-info p{color:#e0e7ff}.upload-info ul{padding:0;list-style:none}.upload-info li{margin:.65rem 0}.upload-info li i{margin-right:.5rem}.allowed-types{padding:.75rem;background:rgba(255,255,255,.12);border-radius:12px;font-size:.72rem}.upload-form{padding:clamp(1.5rem,4vw,3rem)}.drop-zone{display:flex;flex-direction:column;align-items:center;padding:1.7rem;text-align:center;background:#f8faff;border:2px dashed #b8cae8;border-radius:18px;cursor:pointer}.drop-zone.is-dragging{background:#edf4ff;border-color:var(--primary)}.drop-zone input{position:absolute;width:1px;height:1px;opacity:0}.drop-zone span{color:var(--primary);font-size:2.2rem}.drop-zone small{color:var(--muted)}.file-preview{display:grid;gap:.5rem;margin-top:.7rem}.guide-card b{color:#bfdbfe;font-size:2rem}.guide-card>i{display:block;margin:.5rem 0;color:var(--primary);font-size:1.7rem}.guide-card h3{font-size:1.05rem;font-weight:800}.guide-card p{color:var(--muted);font-size:.85rem}.site-footer{background:#111827;color:#94a3b8}.footer-brand{display:flex;align-items:center;gap:.6rem;color:#fff;font-weight:800}.site-footer h3{color:#fff;font-size:.9rem}.site-footer a{display:block;margin:.4rem 0;color:#cbd5e1}.footer-bottom{margin-top:1.5rem;padding-top:1rem;border-top:1px solid #273449;font-size:.78rem}
@media(max-width:767.98px){.filter-bar{grid-template-columns:1fr}.document-card{flex-direction:column}.hero-visual{min-height:220px}.stats{margin-top:-.8rem}}
.document-actions{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin-top:.8rem}.document-actions .download-btn{margin-top:0}.document-actions form{margin:0}.btn-delete-document{padding:.38rem .65rem;color:#dc2626;background:#fff;border:1px solid #fecaca;border-radius:9px;font-size:.75rem;font-weight:750}.btn-delete-document:hover{color:#fff;background:#dc2626;border-color:#dc2626}.login-page{display:grid;place-items:center;min-height:100vh;padding:1rem}.login-card{width:min(100%,440px);padding:2rem;background:#fff;border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow)}.login-logo{display:flex;align-items:center;justify-content:center;gap:.7rem;color:var(--text)}.login-card h1{font-size:1.55rem;font-weight:800}.login-card p{color:var(--muted)}