/* =============================================================================
   Alpha Computer Institutes — Design System
   Modern EdTech / cybersecurity-inspired. Light theme, accessible, responsive.
   ============================================================================= */

:root{
  --brand:#2563eb;      --brand-dark:#1d4ed8;   --brand-light:#dbeafe;
  --accent:#7c3aed;     --accent-2:#06b6d4;     --cyber:#22d3ee;
  --ink:#0f172a;        --ink-2:#334155;        --muted:#64748b;   --muted-2:#94a3b8;
  --bg:#f8fafc;         --surface:#ffffff;      --surface-2:#f1f5f9;
  --line:#e2e8f0;       --line-2:#cbd5e1;
  --success:#16a34a;    --warn:#d97706;         --danger:#dc2626;
  --radius:14px;        --radius-sm:10px;       --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(2,6,23,.06);
  --shadow:0 6px 20px rgba(2,6,23,.08);
  --shadow-lg:0 18px 45px rgba(2,6,23,.14);
  --grad:linear-gradient(135deg,#2563eb 0%,#7c3aed 100%);
  --grad-cyber:linear-gradient(135deg,#0ea5e9 0%,#6366f1 55%,#7c3aed 100%);
  --container:1180px;
  --nav-h:70px;
  font-synthesis:none;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(2rem,4.5vw,3.3rem)}
h2{font-size:clamp(1.5rem,3vw,2.2rem)}
h3{font-size:1.25rem}
p{margin:0 0 1rem}
:focus-visible{outline:3px solid #bfdbfe;outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-tight{padding:48px 0}
.center{text-align:center}
.muted{color:var(--muted)}
.eyebrow{display:inline-block;font-weight:700;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);margin-bottom:10px}
.lead{font-size:1.12rem;color:var(--ink-2);max-width:640px}
.center .lead{margin-inline:auto}
.grid{display:grid;gap:24px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
.mt-0{margin-top:0}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}
.mb-0{margin-bottom:0}

/* --- Buttons --------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:11px;font-weight:700;font-size:.98rem;
  border:1px solid transparent;cursor:pointer;transition:.18s ease;white-space:nowrap;
  line-height:1;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(124,58,237,.28)}
.btn-grad:hover{transform:translateY(-1px);filter:brightness(1.05)}
.btn-outline{background:#fff;border-color:var(--line-2);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost{background:transparent;color:var(--ink-2)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-light{background:rgba(255,255,255,.15);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-light:hover{background:rgba(255,255,255,.25)}
.btn-sm{padding:8px 14px;font-size:.85rem;border-radius:9px}
.btn-block{width:100%}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{filter:brightness(.94)}
.btn-success{background:var(--success);color:#fff}

/* --- Badges & chips -------------------------------------------------------- */
.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.02em}
.badge-free{background:#dcfce7;color:#166534}
.badge-paid{background:#fef3c7;color:#92400e}
.badge-level{background:var(--surface-2);color:var(--ink-2)}
.badge-brand{background:var(--brand-light);color:var(--brand-dark)}
.badge-live{background:#fee2e2;color:#b91c1c}
.badge-upcoming{background:#e0f2fe;color:#0369a1}
.badge-completed{background:var(--surface-2);color:var(--muted)}
.chip{display:inline-block;padding:5px 12px;border:1px solid var(--line);border-radius:999px;font-size:.82rem;color:var(--ink-2);background:#fff}

/* --- Navbar ---------------------------------------------------------------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:18px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;letter-spacing:-.02em}
.brand .logo{width:42px;height:42px;border-radius:50%;background:transparent;display:block;overflow:hidden;box-shadow:0 6px 14px rgba(37,99,235,.28)}
.brand .logo img{width:100%;height:100%;display:block;object-fit:contain}
.brand small{display:block;font-size:.62rem;font-weight:600;color:var(--muted);letter-spacing:.14em;text-transform:uppercase;margin-top:-2px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px;flex-wrap:wrap}
.nav-links a{padding:8px 11px;border-radius:9px;font-size:.9rem;font-weight:600;color:var(--ink-2);transition:.15s}
.nav-links a:hover{background:var(--surface-2);color:var(--brand)}
.nav-links a.active{color:var(--brand)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:9px;padding:8px;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0;border-radius:2px;transition:.2s}

/* --- Hero ------------------------------------------------------------------ */
.hero{position:relative;overflow:hidden;background:var(--grad-cyber);color:#fff;padding:90px 0 100px}
.hero::after{content:"";position:absolute;inset:0;background:
  radial-gradient(700px 340px at 85% -10%,rgba(255,255,255,.22),transparent 60%),
  radial-gradient(500px 300px at 10% 120%,rgba(6,182,212,.35),transparent 60%);pointer-events:none}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{color:#fff}
.hero p{color:rgba(255,255,255,.9);font-size:1.15rem;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-badges{display:flex;gap:18px;flex-wrap:wrap;margin-top:30px}
.hero-badges .hb{display:flex;align-items:center;gap:8px;font-size:.9rem;color:rgba(255,255,255,.92)}
.hero-visual{position:relative}
.hero-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);border-radius:20px;padding:22px;backdrop-filter:blur(6px)}
.hero-card .row{display:flex;align-items:center;gap:12px;padding:12px;border-radius:12px;background:rgba(255,255,255,.1);margin-bottom:10px}
.hero-card .row .ic{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.2);display:grid;place-items:center;flex:0 0 auto}
.code-window{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem;background:#0b1220;border-radius:16px;padding:16px;color:#a5b4fc;box-shadow:var(--shadow-lg)}
.code-window .dots{display:flex;gap:6px;margin-bottom:12px}
.code-window .dots i{width:11px;height:11px;border-radius:50%;display:block}
.code-window .l{white-space:pre;color:#cbd5e1}
.code-window .k{color:#f472b6}.code-window .s{color:#34d399}.code-window .c{color:#64748b}

/* --- Stats ----------------------------------------------------------------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 20px;text-align:center;box-shadow:var(--shadow-sm)}
.stat .n{font-size:2.1rem;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.03em}
.stat .l{color:var(--muted);font-size:.9rem;font-weight:600;margin-top:4px}

/* --- Cards ----------------------------------------------------------------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:.2s;overflow:hidden}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:var(--line-2)}

.course-card{display:flex;flex-direction:column}
.course-card .thumb{position:relative;aspect-ratio:16/9;background:var(--surface-2);overflow:hidden}
.course-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.3s}
.course-card:hover .thumb img{transform:scale(1.04)}
.course-card .thumb .badges{position:absolute;top:10px;left:10px;display:flex;gap:6px}
.course-card .body{padding:16px 16px 18px;display:flex;flex-direction:column;flex:1}
.course-card .cat{font-size:.72rem;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.06em}
.course-card h3{font-size:1.05rem;margin:6px 0 6px}
.course-card .desc{font-size:.88rem;color:var(--muted);margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.course-card .meta{display:flex;gap:14px;font-size:.78rem;color:var(--muted);margin-bottom:14px;flex-wrap:wrap}
.course-card .meta span{display:inline-flex;align-items:center;gap:5px}
.course-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;border-top:1px solid var(--line)}
.price{font-weight:800;font-size:1.1rem;color:var(--ink)}
.price .old{font-size:.82rem;color:var(--muted-2);text-decoration:line-through;font-weight:600;margin-right:6px}
.price .free{color:var(--success)}

.mentor-card{text-align:center;padding:26px 20px}
.mentor-card .ava{width:96px;height:96px;border-radius:50%;margin:0 auto 14px;object-fit:cover;border:4px solid #fff;box-shadow:0 6px 18px rgba(2,6,23,.12);background:var(--surface-2)}
.mentor-card h3{margin:0 0 2px;font-size:1.08rem}
.mentor-card .role{color:var(--brand);font-weight:600;font-size:.86rem;margin-bottom:8px}
.mentor-card .bio{color:var(--muted);font-size:.86rem;margin-bottom:14px}

.feature{padding:26px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}
.feature .ic{width:48px;height:48px;border-radius:12px;background:var(--brand-light);color:var(--brand-dark);display:grid;place-items:center;margin-bottom:14px}
.feature h3{font-size:1.05rem}
.feature p{color:var(--muted);font-size:.9rem;margin:0}

.file-card{display:flex;gap:14px;padding:18px;align-items:flex-start}
.file-card .fic{width:46px;height:46px;border-radius:11px;display:grid;place-items:center;background:var(--brand-light);color:var(--brand-dark);flex:0 0 auto;font-weight:800;font-size:.7rem}
.file-card h3{font-size:1rem;margin:0 0 4px}
.file-card .desc{font-size:.85rem;color:var(--muted);margin:0 0 10px}
.file-card .metaline{font-size:.75rem;color:var(--muted-2);display:flex;gap:12px;flex-wrap:wrap;margin-bottom:12px}

/* --- Testimonials ---------------------------------------------------------- */
.testi{padding:26px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}
.testi .stars{color:#f59e0b;margin-bottom:10px;letter-spacing:2px}
.testi p{font-size:.95rem;color:var(--ink-2)}
.testi .who{display:flex;align-items:center;gap:12px;margin-top:16px}
.testi .who img{width:44px;height:44px;border-radius:50%;object-fit:cover;background:var(--surface-2)}
.testi .who b{display:block;font-size:.9rem}
.testi .who small{color:var(--muted)}

/* --- Gallery --------------------------------------------------------------- */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gallery-grid figure{margin:0;border-radius:var(--radius);overflow:hidden;cursor:pointer;position:relative;aspect-ratio:4/3;background:var(--surface-2)}
.gallery-grid img{width:100%;height:100%;object-fit:cover;transition:.3s}
.gallery-grid figure:hover img{transform:scale(1.06)}
.gallery-grid figcaption{position:absolute;inset:auto 0 0 0;padding:22px 12px 10px;color:#fff;font-size:.82rem;font-weight:600;background:linear-gradient(transparent,rgba(0,0,0,.6))}
.lightbox{position:fixed;inset:0;background:rgba(2,6,23,.9);display:none;place-items:center;z-index:100;padding:20px}
.lightbox.open{display:grid}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:12px}
.lightbox .close{position:absolute;top:18px;right:22px;color:#fff;font-size:2rem;cursor:pointer;line-height:1}

/* --- CTA band -------------------------------------------------------------- */
.cta-band{background:var(--grad);color:#fff;border-radius:var(--radius-lg);padding:56px 40px;text-align:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 260px at 80% 0,rgba(255,255,255,.18),transparent)}
.cta-band h2{color:#fff;position:relative}
.cta-band p{color:rgba(255,255,255,.9);position:relative;max-width:560px;margin-inline:auto}
.cta-band .hero-cta{justify-content:center;position:relative}

/* --- Section headers ------------------------------------------------------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.sec-head .lead{margin-bottom:0}

/* --- Forms ----------------------------------------------------------------- */
.form-card{max-width:460px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow)}
.form-wide{max-width:100%}
label.fl{display:block;font-weight:600;font-size:.88rem;margin:14px 0 6px;color:var(--ink-2)}
.input,select.input,textarea.input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:.95rem;font-family:inherit;background:#fff;color:var(--ink)}
.input:focus{outline:2px solid #bfdbfe;border-color:var(--brand)}
textarea.input{min-height:110px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.help{font-size:.78rem;color:var(--muted);margin-top:5px}
.form-foot{margin-top:20px}

/* --- Alerts & flash -------------------------------------------------------- */
.alert{padding:12px 15px;border-radius:10px;font-size:.9rem;margin-bottom:14px;border:1px solid}
.alert-success{background:#f0fdf4;border-color:#bbf7d0;color:#166534}
.alert-error{background:#fef2f2;border-color:#fecaca;color:#b91c1c}
.alert-info{background:#eff6ff;border-color:#bfdbfe;color:#1e40af}
.flash-wrap{position:fixed;top:84px;right:20px;z-index:80;display:flex;flex-direction:column;gap:10px;max-width:340px}
.toast{padding:13px 16px;border-radius:11px;box-shadow:var(--shadow-lg);font-size:.88rem;font-weight:600;animation:slidein .3s ease;border-left:4px solid}
.toast.success{background:#fff;color:#166534;border-color:var(--success)}
.toast.error{background:#fff;color:#b91c1c;border-color:var(--danger)}
.toast.info{background:#fff;color:#1e40af;border-color:var(--brand)}
@keyframes slidein{from{transform:translateX(30px);opacity:0}to{transform:translateX(0);opacity:1}}

/* --- Empty states & skeletons ---------------------------------------------- */
.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty .ic{width:64px;height:64px;border-radius:16px;background:var(--surface-2);display:grid;place-items:center;margin:0 auto 16px;color:var(--muted-2)}
.skeleton{background:linear-gradient(90deg,#eef2f7 25%,#e2e8f0 37%,#eef2f7 63%);background-size:400% 100%;animation:shimmer 1.4s infinite;border-radius:8px}
@keyframes shimmer{0%{background-position:100% 0}100%{background-position:-100% 0}}

/* --- Page hero (inner pages) ----------------------------------------------- */
.page-hero{background:linear-gradient(180deg,#0b1220,#111c33);color:#fff;padding:56px 0}
.page-hero h1{color:#fff}
.page-hero p{color:rgba(255,255,255,.75);max-width:640px}
.breadcrumb{font-size:.82rem;color:rgba(255,255,255,.6);margin-bottom:12px}
.breadcrumb a:hover{color:#fff}

/* --- Filters bar ----------------------------------------------------------- */
.filters{display:flex;gap:12px;flex-wrap:wrap;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin-bottom:28px}
.filters .input{width:auto;min-width:150px;flex:0 0 auto}
.filters .search{flex:1;min-width:200px}
.filters .search .input{width:100%}

/* --- Tabs (free/paid) ------------------------------------------------------ */
.tabs{display:inline-flex;background:var(--surface-2);padding:4px;border-radius:11px;gap:4px;margin-bottom:24px}
.tabs a{padding:8px 18px;border-radius:8px;font-weight:600;font-size:.9rem;color:var(--ink-2)}
.tabs a.active{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm)}

/* --- Course details -------------------------------------------------------- */
.cd-grid{display:grid;grid-template-columns:1fr 360px;gap:36px;align-items:start}
.cd-video{aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#000}
.cd-side{position:sticky;top:90px}
.cd-buy{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.list-check{list-style:none;padding:0;margin:0}
.list-check li{position:relative;padding:6px 0 6px 30px;color:var(--ink-2)}
.list-check li::before{content:"";position:absolute;left:0;top:9px;width:18px;height:18px;border-radius:50%;background:var(--brand-light) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%232563eb' stroke-width='3'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/12px no-repeat}

/* --- Accordion (curriculum / FAQ) ------------------------------------------ */
.acc{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.acc details{border-bottom:1px solid var(--line)}
.acc details:last-child{border-bottom:0}
.acc summary{padding:15px 18px;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;align-items:center;list-style:none}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";font-size:1.2rem;color:var(--muted)}
.acc details[open] summary::after{content:"–"}
.acc .acc-body{padding:0 18px 16px}
.lesson-row{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:.9rem;color:var(--ink-2);border-top:1px dashed var(--line)}
.lesson-row:first-child{border-top:0}
.lesson-row .dur{margin-left:auto;color:var(--muted);font-size:.8rem}

/* --- Learning page --------------------------------------------------------- */
.learn{display:grid;grid-template-columns:320px 1fr;min-height:calc(100vh - var(--nav-h))}
.learn-side{background:var(--surface);border-right:1px solid var(--line);overflow-y:auto;max-height:calc(100vh - var(--nav-h));position:sticky;top:var(--nav-h)}
.learn-side .ls-head{padding:18px;border-bottom:1px solid var(--line)}
.progress-bar{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden;margin-top:8px}
.progress-bar i{display:block;height:100%;background:var(--grad);border-radius:999px;transition:width .4s}
.mod-title{padding:12px 18px 6px;font-size:.74rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.les-link{display:flex;align-items:center;gap:10px;padding:10px 18px;font-size:.88rem;color:var(--ink-2);border-left:3px solid transparent;cursor:pointer}
.les-link:hover{background:var(--surface-2)}
.les-link.active{background:var(--brand-light);border-left-color:var(--brand);color:var(--brand-dark);font-weight:600}
.les-link .tick{width:20px;height:20px;border-radius:50%;border:2px solid var(--line-2);flex:0 0 auto;display:grid;place-items:center;font-size:.7rem}
.les-link.done .tick{background:var(--success);border-color:var(--success);color:#fff}
.learn-main{padding:26px 30px;max-width:900px}
.learn-video{aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#000;margin-bottom:22px}
.learn-nav{display:flex;justify-content:space-between;gap:12px;margin-top:24px;flex-wrap:wrap}

/* --- Admin ----------------------------------------------------------------- */
.admin{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.admin-side{background:#0b1220;color:#cbd5e1;padding:20px 14px;position:sticky;top:0;height:100vh;overflow-y:auto}
.admin-side .brand{color:#fff;margin-bottom:22px;padding:0 8px}
.admin-side a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;color:#94a3b8;font-size:.9rem;font-weight:600;margin-bottom:2px}
.admin-side a:hover{background:rgba(255,255,255,.06);color:#fff}
.admin-side a.active{background:var(--brand);color:#fff}
.admin-side .grp{font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;color:#475569;padding:14px 12px 6px;font-weight:800}
.admin-main{background:var(--bg);min-width:0}
.admin-top{background:#fff;border-bottom:1px solid var(--line);padding:14px 26px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:20}
.admin-top h1{font-size:1.2rem;margin:0}
.admin-body{padding:26px}
.admin-toggle{display:none}
.stat-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-bottom:26px}
.stat-tile{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}
.stat-tile .n{font-size:1.8rem;font-weight:900;color:var(--ink)}
.stat-tile .l{color:var(--muted);font-size:.82rem;font-weight:600;margin-top:2px}
.stat-tile .ic{float:right;width:40px;height:40px;border-radius:10px;background:var(--brand-light);color:var(--brand-dark);display:grid;place-items:center}

.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-bottom:22px}
.panel-head{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.panel-head h2{font-size:1.05rem;margin:0}
.panel-body{padding:20px}

table.tbl{width:100%;border-collapse:collapse;font-size:.9rem}
table.tbl th,table.tbl td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
table.tbl th{font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:700}
table.tbl tbody tr:hover{background:var(--surface-2)}
.table-scroll{overflow-x:auto}
.dot-status{display:inline-flex;align-items:center;gap:6px;font-size:.82rem}
.dot-status::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--muted-2)}
.dot-status.on::before{background:var(--success)}
.dot-status.off::before{background:var(--danger)}
.actions-inline{display:flex;gap:6px;flex-wrap:wrap}

/* --- Footer ---------------------------------------------------------------- */
.footer{background:#0b1220;color:#94a3b8;padding:56px 0 26px;margin-top:60px}
.footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer h4{color:#fff;font-size:.92rem;margin-bottom:14px;letter-spacing:.02em}
.footer a{display:block;padding:5px 0;font-size:.88rem;color:#94a3b8}
.footer a:hover{color:#fff}
.footer .brand{color:#fff}
.footer .brand .logo{box-shadow:none}
.footer .social{display:flex;gap:10px;margin-top:16px}
.footer .social a{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.06);display:grid;place-items:center;padding:0}
.footer .social a:hover{background:var(--brand)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:34px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* --- Login-required screen ------------------------------------------------- */
.gate{max-width:440px;margin:8vh auto;text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:44px 34px;box-shadow:var(--shadow)}
.gate .ic{width:64px;height:64px;border-radius:16px;background:var(--brand-light);color:var(--brand-dark);display:grid;place-items:center;margin:0 auto 18px}

/* --- Responsive ------------------------------------------------------------ */
@media (max-width:960px){
  .cols-4{grid-template-columns:repeat(2,1fr)}
  .cols-3{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .hero .container{grid-template-columns:1fr}
  .hero-visual{display:none}
  .cd-grid{grid-template-columns:1fr}
  .cd-side{position:static}
  .gallery-grid{grid-template-columns:repeat(3,1fr)}
  .footer .cols{grid-template-columns:1fr 1fr}
  .learn{grid-template-columns:1fr}
  .learn-side{position:static;max-height:none;border-right:0;border-bottom:1px solid var(--line)}
}
@media (max-width:720px){
  .nav-links,.nav-right .desktop-only{display:none}
  .nav.open .nav-links{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:12px;gap:2px;box-shadow:var(--shadow)}
  .nav.open .nav-links a{padding:12px}
  .nav.open .nav-right .desktop-only{display:flex}
  .nav-toggle{display:block}
  .section{padding:52px 0}
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .form-row{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .admin{grid-template-columns:1fr}
  .admin-side{position:fixed;left:0;top:0;bottom:0;width:250px;z-index:60;transform:translateX(-100%);transition:.25s}
  .admin-side.open{transform:none}
  .admin-toggle{display:inline-flex}
  .cta-band{padding:40px 22px}
}
@media (max-width:460px){
  .stats{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr}
}