/* ============================================================
   tiba.uz — design system  (v4 · Premium / Ink + Teal / Minimal)
   One accent (deep teal, <5% of surface). Monochrome ink base.
   Hairline borders, not shadows. 8px spacing. 8px radii. Inter only.
   Class + CSS-variable names are a stable contract — preserved.
   ============================================================ */

:root{
  /* ---- Brand: single accent (deep teal) ---- */
  --c-primary:#0f766e;
  --c-primary-600:#0b5d57;
  --c-primary-700:#0a4a45;
  --c-primary-50:#f1f7f6;
  --c-primary-100:#dbeae8;
  --c-violet:#0f766e;         /* legacy alias -> teal (no stray colour) */
  --c-ink-2:#20242b;

  /* ---- Accent for ratings only (muted amber) ---- */
  --c-accent:#b7791f;
  --c-accent-600:#8a5a12;
  --c-coral:#b42318; --c-coral-bg:#fbeceb; --c-coral-700:#8a1b12;
  --bestseller-bg:#f4efe2; --bestseller-fg:#7a5600;

  /* ---- Neutrals (near-neutral, faintly cool) ---- */
  --ink:#0c0f14;              /* headings / strongest text */
  --ink-dark:#0c0f14;         /* dark surfaces (admin sidebar, CTA band) */
  --ink-dark-2:#151a21;
  --text:#3b4149;            /* body */
  --muted:#6b717a;           /* secondary text (AA on white) */
  --muted-2:#98a0aa;         /* decorative icons / placeholders */
  --line:#e9eaec;            /* hairline */
  --line-strong:#dcdee2;     /* control borders / hover */
  --line-2:#f2f3f4;
  --bg:#fafafa;              /* canvas */
  --bg-2:#f4f5f6;            /* subtle fill (inputs hover, thumbs) */
  --card:#ffffff;

  /* ---- Status (muted, status-only) ---- */
  --success:#157a47; --success-bg:#eaf3ec; --success-50:#f5faf6;
  --danger:#b42318;  --danger-bg:#fbeceb;
  --warning:#8a5a12; --warning-bg:#f6efdd;
  --info:#1f5ead;    --info-bg:#eaf0fa;

  /* ---- Flat "gradient" tokens (neutralised -> solid) ---- */
  --grad:var(--ink-dark);
  --grad-soft:var(--c-primary);
  --grad-amber:var(--c-accent);

  /* ---- Elevation: borders first, faint shadow for overlays only ---- */
  --shadow-xs:0 1px 1px rgba(12,15,20,.03);
  --shadow-sm:0 1px 2px rgba(12,15,20,.04);
  --shadow:0 1px 2px rgba(12,15,20,.05);
  --shadow-lg:0 16px 40px -18px rgba(12,15,20,.24),0 4px 10px -6px rgba(12,15,20,.10);
  --shadow-brand:0 1px 2px rgba(15,118,110,.14);
  --ring:0 0 0 3px rgba(15,118,110,.22);

  /* ---- Radius (small, consistent; max 12) ---- */
  --radius-sm:6px;
  --radius:8px;
  --radius-lg:12px;
  --radius-pill:999px;

  /* ---- Spacing (8px system) ---- */
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:24px;
  --s-6:32px; --s-7:48px; --s-8:64px; --s-9:96px;
  --space:24px;

  /* ---- Layout ---- */
  --container:1140px;
  --prose:66ch;
  --site-header:64px;

  /* ---- Type (single family: Inter) ---- */
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-head:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-display:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;font-size:15px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  font-feature-settings:'cv05' 1,'ss01' 1;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0 0 .5em;color:var(--ink);font-family:var(--font-head);font-weight:700;letter-spacing:-.021em;line-height:1.14}
h1{font-size:clamp(2.15rem,4.2vw,3rem);letter-spacing:-.032em;line-height:1.06;font-weight:700}
h2{font-size:clamp(1.6rem,2.9vw,2.15rem);letter-spacing:-.028em;line-height:1.1}
h3{font-size:1.14rem;letter-spacing:-.015em}
h4{font-size:1rem}
p{margin:0 0 1rem}
small{font-size:.8rem}
code{background:var(--bg-2);padding:2px 6px;border-radius:5px;font-size:.85em;color:var(--c-primary-700);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
::selection{background:var(--c-primary-100);color:var(--c-primary-700)}
i[class^="fa-"],i[class*=" fa-"]{line-height:1}

a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
textarea:focus-visible,summary:focus-visible,.btn:focus-visible,.course-card:focus-visible,
.ll-item:focus-visible,.q-option:focus-visible,.pay-method:focus-visible,.faq-q:focus-visible,
.side-link:focus-visible,.adm-link:focus-visible,.nav-links a:focus-visible{
  outline:none;box-shadow:var(--ring);border-radius:var(--radius-sm)
}
.tabular,.rating,.price-now,.price-old,.price-tag,.kpi .value,.stat b,.hero-stat b,
.table td,.pagination a,.pagination span,.badge{font-variant-numeric:tabular-nums}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* ---- Layout ---------------------------------------------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
.section{padding:clamp(56px,8vw,96px) 0}
.section-sm{padding:clamp(40px,5vw,56px) 0}
.section-head{max-width:640px;margin:0 auto 48px}
.section-head.text-center{text-align:center;margin-inline:auto}
.section-head h2{margin:.15em 0 .35em}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-weight:600;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:2px}
.section-head .eyebrow i{color:var(--c-primary);font-size:.85em}
.section-head p{color:var(--muted);font-size:1.05rem;line-height:1.6}
.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)}
.flex{display:flex}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}
.justify-between{justify-content:space-between}.justify-center{justify-content:center}
.gap-6{gap:6px}.gap-8{gap:8px}.gap-10{gap:10px}.gap-12{gap:12px}.gap-14{gap:14px}.gap-16{gap:16px}.gap-24{gap:24px}
.wrap{flex-wrap:wrap}.col{flex-direction:column}.flex-1{flex:1}
.text-center{text-align:center}.text-right{text-align:right}
.muted{color:var(--muted)}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.hide{display:none!important}
.prose{max-width:var(--prose);line-height:1.72}
.prose p{margin:0 0 1.1rem}

/* ---- Icon helpers (neutral; no coloured chips) ----------- */
.icon-chip{width:40px;height:40px;border-radius:var(--radius);display:inline-grid;place-items:center;font-size:1rem;background:var(--bg-2);color:var(--muted);border:1px solid var(--line);flex:0 0 auto}
.icon-chip.amber,.icon-chip.violet{background:var(--bg-2);color:var(--muted)}
.icon-chip.lg{width:52px;height:52px;font-size:1.25rem;border-radius:var(--radius-lg)}
.fa-fw{width:1.25em;text-align:center}

/* ---- Buttons --------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;
  padding:0 16px;border-radius:var(--radius);border:1px solid transparent;
  font-weight:600;font-size:.875rem;cursor:pointer;line-height:1;white-space:nowrap;
  transition:background .14s ease,border-color .14s ease,color .14s ease;
}
.btn i{font-size:.9em}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600)}
.btn-grad{background:var(--c-primary);color:#fff}
.btn-grad:hover{background:var(--c-primary-600)}
.btn-accent{background:var(--ink);color:#fff}
.btn-accent:hover{background:#000}
.btn-ghost{background:transparent;color:var(--c-ink-2);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--bg-2);border-color:var(--line-strong)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.08)}
.btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-light:hover{background:var(--bg-2)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{filter:brightness(.94)}
.btn-success{background:var(--success);color:#fff}
.btn-block{width:100%}
.btn-lg{height:46px;padding:0 22px;font-size:.94rem}
.btn-sm{height:32px;padding:0 12px;font-size:.82rem}
.btn-icon{width:40px;padding:0}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---- Badges / chips (quiet) ------------------------------ */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:var(--radius-sm);font-size:.74rem;font-weight:600;line-height:1.4;background:var(--bg-2);color:var(--muted);border:1px solid transparent}
.badge i{font-size:.9em;opacity:.9}
.badge-primary{background:var(--c-primary-50);color:var(--c-primary-700)}
.badge-accent{background:var(--bestseller-bg);color:var(--bestseller-fg)}
.badge-success{background:var(--success-bg);color:var(--success)}
.badge-danger{background:var(--danger-bg);color:var(--danger)}
.badge-warning{background:var(--warning-bg);color:var(--warning)}
.badge-info{background:var(--info-bg);color:var(--info)}
.badge-soft{background:var(--bg-2);color:var(--muted)}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.pill{display:inline-flex;gap:8px;align-items:center;padding:7px 13px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);font-size:.82rem;font-weight:600;color:var(--c-ink-2)}
.pill i{color:var(--muted-2)}

/* ---- Cards (flat + hairline) ----------------------------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:none}
.card-pad{padding:24px}
.card-hover{transition:border-color .14s ease,background .14s ease}
.card-hover:hover{border-color:var(--line-strong);background:#fff}

/* ---- Course card ----------------------------------------- */
.course-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:border-color .14s ease;height:100%}
.course-card:hover{border-color:var(--line-strong)}
.course-card .thumb{position:relative;aspect-ratio:16/10;background:var(--bg-2);overflow:hidden;display:block;border-bottom:1px solid var(--line)}
.course-card .thumb img{width:100%;height:100%;object-fit:cover}
.course-card .thumb .ph{display:grid;place-items:center;height:100%;color:var(--muted-2);font-size:1.7rem}
.course-card .thumb .cat{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.94);color:var(--c-ink-2);padding:4px 9px;border-radius:var(--radius-sm);font-size:.68rem;font-weight:600;letter-spacing:.02em;display:inline-flex;gap:6px;align-items:center;border:1px solid var(--line)}
.course-card .thumb .cat i{color:var(--muted-2)}
.course-card .thumb .price-tag{position:absolute;bottom:12px;right:12px;background:#fff;color:var(--ink);padding:5px 10px;border-radius:var(--radius-sm);font-weight:700;font-size:.8rem;border:1px solid var(--line)}
.course-card .body{padding:18px;display:flex;flex-direction:column;flex:1;gap:9px}
.cc-badges{display:flex;gap:6px;flex-wrap:wrap}
.course-card h3{font-size:.98rem;margin:0;line-height:1.4;font-weight:600;letter-spacing:-.01em}
.course-card h3 a:hover{color:var(--c-primary-700)}
.course-card .meta{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:.8rem;flex-wrap:wrap;margin-top:auto;padding-top:4px}
.course-card .meta span{display:inline-flex;align-items:center;gap:6px}
.course-card .meta i{color:var(--muted-2)}
.course-card .mentor{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--muted)}
.rating{display:inline-flex;align-items:center;gap:5px;font-weight:600;font-size:.82rem;color:var(--c-ink-2)}
.rating .stars,.stars{color:var(--c-accent);font-size:.8rem}
.price-row{display:flex;align-items:baseline;gap:8px;padding-top:6px;border-top:1px solid var(--line-2);margin-top:2px}
.price-now{font-size:1rem;font-weight:700;color:var(--ink)}
.price-now.price-free{color:var(--c-primary-700)}
.price-old{font-size:.82rem;color:var(--muted-2);text-decoration:line-through}

/* ---- Avatar ---------------------------------------------- */
.avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;background:var(--ink);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:600;font-size:.85rem;flex:0 0 auto;overflow:hidden;letter-spacing:.01em}
.avatar img{width:100%;height:100%;object-fit:cover}
.avatar-lg{width:64px;height:64px;font-size:1.3rem}
.avatar-sm{width:28px;height:28px;font-size:.68rem}

/* ---- Forms ----------------------------------------------- */
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;margin-bottom:7px;font-size:.82rem;color:var(--c-ink-2)}
.input,.select,.textarea{
  width:100%;height:40px;padding:0 13px;border:1px solid var(--line-strong);border-radius:var(--radius);
  background:#fff;font-size:.9rem;font-family:inherit;transition:border-color .14s ease,box-shadow .14s ease;color:var(--text);
}
.textarea{height:auto;min-height:118px;padding:11px 13px;resize:vertical;line-height:1.6}
.input::placeholder,.textarea::placeholder{color:var(--muted-2)}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:var(--ring)}
.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath fill='none' stroke='%236b717a' stroke-width='1.4' d='M1 1.5 5 5.5 9 1.5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;padding-right:34px;cursor:pointer}
.input-icon{position:relative;display:flex;align-items:center}
.input-icon i{position:absolute;left:13px;color:var(--muted-2);font-size:.9rem;pointer-events:none}
.input-icon .input{padding-left:38px}
.field .error{color:var(--danger);font-size:.8rem;margin-top:6px;display:flex;gap:6px;align-items:center}
.field .hint{color:var(--muted);font-size:.8rem;margin-top:6px;display:block}
.input.has-error,.has-error{border-color:var(--danger)!important}
.checkbox{display:flex;align-items:flex-start;gap:9px;font-size:.88rem;cursor:pointer;color:var(--text)}
.checkbox input{margin-top:2px;width:16px;height:16px;accent-color:var(--c-primary)}

/* ---- Header / nav ---------------------------------------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,250,250,.86);backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:14px;height:var(--site-header)}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--font-head);font-weight:700;font-size:1.12rem;letter-spacing:-.03em;color:var(--ink)}
.brand .logo{width:30px;height:30px;border-radius:8px;background:var(--ink);display:grid;place-items:center;color:#fff;font-size:.85rem}
.brand b{color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:22px}
.nav-links a{display:inline-flex;align-items:center;gap:7px;padding:8px 11px;border-radius:var(--radius);font-weight:500;font-size:.875rem;color:var(--muted);transition:color .14s ease,background .14s ease}
.nav-links a i{font-size:.8rem;color:var(--muted-2)}
.nav-links a:hover{color:var(--ink);background:var(--bg-2)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active i{color:var(--c-primary)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang-switch{display:flex;gap:1px;background:var(--bg-2);padding:2px;border-radius:var(--radius)}
.lang-switch a{padding:5px 9px;border-radius:6px;font-size:.72rem;font-weight:600;color:var(--muted)}
.lang-switch a.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-xs)}
.menu-toggle{display:none;background:none;border:1px solid var(--line);font-size:1rem;cursor:pointer;color:var(--ink);width:40px;height:40px;border-radius:var(--radius);place-items:center}
.menu-toggle:hover{background:var(--bg-2)}

/* ---- Hero (light, typographic) --------------------------- */
.hero{position:relative;overflow:hidden;background:var(--bg);color:var(--ink);border-bottom:1px solid var(--line)}
.hero::before,.hero::after{display:none}
.hero-inner{position:relative;z-index:1;padding:clamp(60px,8vw,104px) 0 clamp(60px,8vw,100px);display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{color:var(--ink);margin-bottom:20px}
.hero h1 span{color:var(--c-primary-700)}
.hero .lead{font-size:1.12rem;color:var(--muted);max-width:56ch;margin-bottom:28px;line-height:1.6}
.hero .hero-badges{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.hero .hero-badges .pill{background:#fff;border-color:var(--line);color:var(--c-ink-2)}
.hero .hero-badges .pill i{color:var(--c-primary)}
.search-bar{display:flex;gap:8px;background:#fff;border-radius:var(--radius);padding:6px;border:1px solid var(--line-strong);max-width:520px}
.search-bar .input-icon{flex:1;display:flex;align-items:center}
.search-bar input{flex:1;border:none;outline:none;padding:9px 14px 9px 38px;font-size:.94rem;border-radius:var(--radius);background:transparent;color:var(--ink);width:100%}
.hero-art{position:relative}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow)}
.hero-card .icon-chip{background:var(--bg-2);color:var(--muted)}
.hero-card h3{color:var(--ink)}
.hero-stat-row{display:flex;gap:0;margin-top:20px;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.hero-stat{padding:16px 20px;flex:1;min-width:0;border-right:1px solid var(--line)}
.hero-stat:last-child{border-right:0}
.hero-stat b{font-size:1.4rem;display:block;color:var(--ink);font-weight:700}
.hero-stat span{font-size:.76rem;color:var(--muted)}

/* ---- Stats band ------------------------------------------ */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.stats-band .stat{padding:28px 20px;text-align:center;border-right:1px solid var(--line)}
.stats-band .stat:last-child{border-right:0}
.stat b{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:700;color:var(--ink);display:block;letter-spacing:-.02em}
.stat span{color:var(--muted);font-weight:500;font-size:.85rem}

/* ---- Steps ----------------------------------------------- */
.step{position:relative;padding:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg)}
.step .num{width:34px;height:34px;border-radius:var(--radius);background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.95rem;margin-bottom:16px}

/* ---- Mentors --------------------------------------------- */
.mentor-card{text-align:center;padding:28px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg)}
.mentor-card .avatar{margin:0 auto 14px}
.mentor-card .role{color:var(--muted);font-weight:500;font-size:.83rem;margin-top:2px}

/* ---- Testimonials ---------------------------------------- */
.testimonial{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px}
.testimonial .quote{font-size:1rem;color:var(--muted-2);margin-bottom:12px}
.testimonial p{color:var(--c-ink-2);font-size:.95rem;line-height:1.6}
.testimonial .who{display:flex;align-items:center;gap:11px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-2)}

/* ---- FAQ ------------------------------------------------- */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px;overflow:hidden}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;cursor:pointer;font-weight:600;color:var(--ink);font-size:.94rem}
.faq-q .ic{transition:transform .18s ease;color:var(--muted);font-size:.8rem;flex:0 0 auto}
.faq-item.open{border-color:var(--line-strong)}
.faq-item.open .faq-q .ic{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;color:var(--muted)}
.faq-item.open .faq-a{max-height:360px}
.faq-a div{padding:0 20px 20px;line-height:1.6}

/* ---- Certificate ----------------------------------------- */
.cert{position:relative;background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius-lg);padding:34px;box-shadow:none}
.cert::before{content:"";position:absolute;inset:12px;border:1px solid var(--line);border-radius:8px;pointer-events:none}
.cert-seal{width:56px;height:56px;border-radius:50%;background:var(--ink);display:grid;place-items:center;color:#fff;font-size:1.4rem}
.cert h2{font-size:1.35rem;color:var(--ink)}
.cert .name{font-family:var(--font-head);font-size:1.7rem;font-weight:700;border-bottom:1px solid var(--line-strong);display:inline-block;padding-bottom:6px;margin:8px 0;color:var(--ink);letter-spacing:-.02em}
.cert .qr{width:88px;height:88px;border-radius:8px;border:1px solid var(--line);background:#fff;display:block}

/* ---- Alerts / flash -------------------------------------- */
.flash-stack{position:fixed;top:76px;right:24px;z-index:100;display:flex;flex-direction:column;gap:10px;max-width:380px}
.alert{padding:13px 15px;border-radius:var(--radius);display:flex;gap:10px;align-items:flex-start;box-shadow:var(--shadow-lg);font-size:.88rem;font-weight:500;background:#fff;border:1px solid var(--line);border-left:3px solid var(--muted)}
.alert i{margin-top:1px;font-size:.95rem}
.alert-success{border-left-color:var(--success);color:#14532d}.alert-success i{color:var(--success)}
.alert-error,.alert-danger{border-left-color:var(--danger);color:#7f1d1d}.alert-error i,.alert-danger i{color:var(--danger)}
.alert-warning{border-left-color:var(--warning);color:#78350f}.alert-warning i{color:var(--warning)}
.alert-info{border-left-color:var(--info);color:#1e3a8a}.alert-info i{color:var(--info)}

/* ---- Progress -------------------------------------------- */
.progress{height:6px;background:var(--bg-2);border-radius:var(--radius-pill);overflow:hidden}
.progress>span{display:block;height:100%;background:var(--c-primary);border-radius:var(--radius-pill);transition:width .4s ease}

/* ---- Tables ---------------------------------------------- */
.table{width:100%;border-collapse:collapse;font-size:.875rem}
.table th{text-align:left;padding:11px 16px;color:var(--muted);font-weight:600;font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--line);background:var(--bg)}
.table td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:middle;color:var(--text)}
.table tbody tr:hover{background:var(--bg)}
.table tr:last-child td{border-bottom:none}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff}

/* ---- Pagination ------------------------------------------ */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:36px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:38px;height:38px;display:grid;place-items:center;border-radius:var(--radius);border:1px solid var(--line);background:#fff;font-weight:600;font-size:.85rem;color:var(--text)}
.pagination a:hover{border-color:var(--line-strong);color:var(--ink)}
.pagination .current{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---- Footer (light, minimal) ----------------------------- */
.site-footer{background:var(--bg);color:var(--muted);padding:56px 0 28px;margin-top:80px;border-top:1px solid var(--line)}
.site-footer h4{color:var(--ink);font-size:.8rem;margin-bottom:14px;font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.site-footer a{color:var(--muted);display:flex;align-items:center;gap:8px;padding:5px 0;font-size:.875rem;transition:color .14s ease}
.site-footer a i{color:var(--muted-2);width:16px;text-align:center;font-size:.85em}
.site-footer a:hover{color:var(--ink)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px}
.footer-bottom{border-top:1px solid var(--line);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted-2);font-size:.82rem}
.pay-icons{display:flex;gap:6px;flex-wrap:wrap;margin-top:16px}
.pay-icons span{background:#fff;border:1px solid var(--line);padding:5px 11px;border-radius:6px;font-size:.74rem;font-weight:600;color:var(--muted)}

/* ---- Dashboard layout ------------------------------------ */
.dash{display:grid;grid-template-columns:248px 1fr;min-height:calc(100vh - var(--site-header))}
.dash-side{background:#fff;border-right:1px solid var(--line);padding:18px 12px;position:sticky;top:var(--site-header);height:calc(100vh - var(--site-header));overflow-y:auto}
.dash-side .side-link{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:var(--radius);font-weight:500;color:var(--muted);margin-bottom:1px;font-size:.875rem;transition:color .14s ease,background .14s ease}
.dash-side .side-link:hover{background:var(--bg-2);color:var(--ink)}
.dash-side .side-link.active{background:var(--bg-2);color:var(--ink);font-weight:600}
.dash-side .side-link .ic{font-size:.9rem;width:18px;text-align:center;color:var(--muted-2);flex:0 0 auto}
.dash-side .side-link.active .ic{color:var(--c-primary)}
.dash-side .side-title{font-size:.68rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted-2);font-weight:600;padding:16px 12px 7px}
.dash-main{padding:32px;max-width:1040px}
.page-head{margin-bottom:26px}
.page-head h1{font-size:1.55rem;margin-bottom:4px;letter-spacing:-.025em}
.page-head p{color:var(--muted);margin:0;font-size:.94rem}

/* ---- KPI cards (clean) ----------------------------------- */
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:6px}
.kpi-row{display:flex;align-items:center;justify-content:space-between;gap:10px}
.kpi .label{color:var(--muted);font-size:.8rem;font-weight:500;display:inline-flex;align-items:center;gap:7px}
.kpi .label i{color:var(--muted-2);font-size:.85em}
.kpi .value{font-size:1.7rem;font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.kpi .trend{font-size:.8rem;font-weight:600;display:inline-flex;gap:5px;align-items:center}
.kpi .trend.up{color:var(--success)}.kpi .trend.down{color:var(--danger)}
.kpi .ic{width:34px;height:34px;border-radius:var(--radius);display:grid;place-items:center;font-size:.95rem;background:var(--bg-2);color:var(--muted);border:1px solid var(--line);flex:0 0 auto}

/* ---- Tabs ------------------------------------------------ */
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:24px;overflow-x:auto}
.tabs a,.tabs button{display:inline-flex;align-items:center;gap:7px;padding:11px 4px;margin-right:14px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap;background:none;border-top:0;border-left:0;border-right:0;cursor:pointer;font-size:.88rem}
.tabs a:hover,.tabs button:hover{color:var(--ink)}
.tabs a.active,.tabs button.active{color:var(--ink);border-bottom-color:var(--c-primary)}

/* ---- Video / lesson player ------------------------------- */
.player-wrap{position:relative;background:#0c0f14;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line)}
.player-wrap iframe,.player-wrap video{width:100%;height:100%;border:0;display:block}
.watermark{position:absolute;top:12px;right:12px;pointer-events:none;color:rgba(255,255,255,.4);font-size:.74rem;font-weight:500;padding:4px 9px;z-index:5;background:rgba(0,0,0,.28);border-radius:6px}
.lesson-list{display:flex;flex-direction:column;gap:1px}
.lesson-list .ll-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:var(--radius);cursor:pointer;border:1px solid transparent;color:var(--text);font-size:.875rem;transition:background .14s ease}
.lesson-list .ll-item:hover{background:var(--bg-2)}
.lesson-list .ll-item.active{background:var(--bg-2);border-color:var(--line);font-weight:600;color:var(--ink)}
.lesson-list .ll-item.done .ll-ic{background:var(--success);color:#fff;border-color:var(--success)}
.ll-ic{width:26px;height:26px;border-radius:50%;background:#fff;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:.66rem;flex:0 0 auto;color:var(--muted)}

/* ---- Quiz ------------------------------------------------ */
.q-option{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line-strong);border-radius:var(--radius);margin-bottom:10px;cursor:pointer;transition:border-color .14s ease,background .14s ease;background:#fff}
.q-option:hover{border-color:var(--c-primary)}
.q-option.selected{border-color:var(--c-primary);background:var(--c-primary-50)}
.q-option.correct{border-color:var(--success);background:var(--success-bg)}
.q-option.wrong{border-color:var(--danger);background:var(--danger-bg)}
.q-option input{accent-color:var(--c-primary);width:17px;height:17px}

/* ---- AI assistant widget --------------------------------- */
.ai-box{display:flex;flex-direction:column;height:440px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;overflow:hidden}
.ai-head{padding:13px 16px;background:var(--ink);color:#fff;font-weight:600;display:flex;align-items:center;gap:9px;font-size:.9rem}
.ai-head i{color:#fff}
.ai-log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;background:var(--bg)}
.ai-msg{display:flex}
.ai-msg.ai-user{justify-content:flex-end}
.ai-bubble{max-width:82%;padding:10px 14px;border-radius:var(--radius);font-size:.88rem;white-space:pre-wrap;line-height:1.55}
.ai-user .ai-bubble{background:var(--c-primary);color:#fff}
.ai-bot .ai-bubble{background:#fff;border:1px solid var(--line);color:var(--text)}
.ai-foot{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}
.ai-input{flex:1;border:1px solid var(--line-strong);border-radius:var(--radius);padding:9px 13px;outline:none;font-family:inherit;font-size:.88rem}
.ai-input:focus{border-color:var(--c-primary);box-shadow:var(--ring)}
.ai-send{border:0;border-radius:var(--radius);width:40px;height:40px;background:var(--c-primary);color:#fff;cursor:pointer;font-size:.9rem;flex:0 0 auto}
.ai-send:hover{background:var(--c-primary-600)}

/* ---- Checkout -------------------------------------------- */
.pay-method{display:flex;align-items:center;gap:12px;padding:14px 15px;border:1px solid var(--line-strong);border-radius:var(--radius);margin-bottom:10px;cursor:pointer;transition:border-color .14s ease,background .14s ease;font-weight:500;color:var(--text)}
.pay-method:hover{border-color:var(--c-primary)}
.pay-method.selected{border-color:var(--c-primary);background:var(--c-primary-50)}
.pay-method input{accent-color:var(--c-primary);width:17px;height:17px}
.pay-logo{min-width:54px;height:32px;padding:0 10px;border-radius:6px;background:var(--bg-2);border:1px solid var(--line);display:grid;place-items:center;font-weight:700;font-size:.7rem;color:var(--c-ink-2)}

/* ---- Conversion (course page) ---------------------------- */
.urgency{display:flex;flex-direction:column;gap:10px}
.urgency .u-item{display:flex;align-items:center;gap:9px;font-size:.86rem;font-weight:500;color:var(--c-ink-2)}
.urgency .u-item i{color:var(--muted-2);width:16px;text-align:center}
.urgency .u-item .dot{width:7px;height:7px;border-radius:50%;background:var(--success);flex:0 0 auto}
.guarantee{display:flex;gap:11px;align-items:center;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:13px 15px;color:var(--c-ink-2);font-weight:500;font-size:.86rem}
.guarantee i{font-size:1.1rem;color:var(--c-primary)}

/* ---- Empty state / lists --------------------------------- */
.empty{text-align:center;padding:56px 24px;color:var(--muted)}
.empty .ic{font-size:1.8rem;margin-bottom:14px;color:var(--muted-2)}
.check-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.check-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text);font-size:.92rem}
.check-list li>i,.check-list li i:first-child{color:var(--c-primary);margin-top:3px;flex:0 0 auto;font-size:.85em}

/* ---- Misc ------------------------------------------------ */
.divider{height:1px;background:var(--line);margin:24px 0;border:0}
.breadcrumb{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:.82rem;margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb i{font-size:.6rem;color:var(--muted-2)}
.sticky-buy{position:sticky;top:calc(var(--site-header) + 24px)}
.note-tag{background:var(--bg-2);color:var(--muted);padding:2px 8px;border-radius:5px;font-size:.7rem;font-weight:600}
.skeleton{background:var(--bg-2)}

/* ---- Auth split ------------------------------------------ */
.auth-wrap{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr}
.auth-aside{background:var(--ink);position:relative;overflow:hidden;color:#fff;padding:56px;display:flex;flex-direction:column;justify-content:center}
.auth-aside::before{display:none}
.auth-aside>*{position:relative;z-index:1}
.auth-aside h1,.auth-aside h2{color:#fff}
.auth-aside .check-list li{color:rgba(255,255,255,.82)}
.auth-aside .check-list li i{color:var(--c-primary)}
.auth-form-side{display:flex;align-items:center;justify-content:center;padding:40px}
.auth-card{width:100%;max-width:400px}
.auth-card .brand{margin-bottom:24px}

/* ---- Admin shell (dark ink sidebar) ---------------------- */
.adm-body{background:var(--bg)}
.adm{display:grid;grid-template-columns:248px 1fr;min-height:100vh}
.adm-side{background:var(--ink);color:#fff;position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column;z-index:45;border-right:1px solid #1c222b}
.adm-brand{display:flex;align-items:center;gap:10px;padding:18px 16px;font-family:var(--font-head);font-weight:700;font-size:1.05rem;color:#fff;border-bottom:1px solid rgba(255,255,255,.07);letter-spacing:-.02em}
.adm-brand .logo{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;background:rgba(255,255,255,.1);font-size:.85rem;color:#fff;flex:0 0 auto}
.adm-brand small{display:block;font-size:.56rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--c-primary);opacity:.9;margin-top:2px}
.adm-nav{padding:8px 10px;flex:1 1 auto}
.adm-nav .side-title{font-size:.62rem;text-transform:uppercase;letter-spacing:.09em;color:rgba(255,255,255,.34);font-weight:600;padding:15px 12px 7px}
.adm-link{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:var(--radius);font-weight:500;color:rgba(255,255,255,.72);font-size:.875rem;margin-bottom:1px;transition:background .14s ease,color .14s ease;width:100%;border:0;background:none;cursor:pointer;text-align:left}
.adm-link:hover{background:rgba(255,255,255,.07);color:#fff}
.adm-link.active{background:rgba(255,255,255,.09);color:#fff}
.adm-link.active .ic{color:var(--c-primary)}
.adm-link .ic{width:18px;text-align:center;font-size:.9rem;flex:0 0 auto;color:rgba(255,255,255,.55)}
.adm-link-danger{color:#f2a7a1}
.adm-link-danger:hover{background:rgba(180,35,24,.18);color:#fff}
.adm-side-foot{padding:10px;border-top:1px solid rgba(255,255,255,.07)}
.adm-main{display:flex;flex-direction:column;min-width:0}
.adm-top{position:sticky;top:0;z-index:30;background:rgba(250,250,250,.9);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line);padding:12px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.adm-top-title{font-size:1.05rem;margin:0;font-family:var(--font-head);font-weight:700;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.adm-burger{display:none;width:40px;height:40px;border-radius:var(--radius);border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;align-items:center;justify-content:center;font-size:1rem;flex:0 0 auto}
.adm-lang{display:inline-flex;gap:1px;background:var(--bg-2);border-radius:var(--radius);padding:2px}
.adm-lang-link{padding:5px 9px;border-radius:6px;font-size:.72rem;font-weight:600;color:var(--muted)}
.adm-lang-link.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-xs)}
.adm-user{display:flex;align-items:center;gap:10px}
.adm-user-meta{display:flex;flex-direction:column;gap:1px;line-height:1.1;font-size:.8rem}
.adm-content{padding:28px;max-width:1200px;width:100%}
.adm-backdrop{display:none;position:fixed;inset:0;background:rgba(12,15,20,.5);z-index:44}
.adm-backdrop.show{display:block}
.adm-auth-body{background:var(--ink)}
.adm-auth{min-height:100vh;display:grid;place-items:center;padding:24px;position:relative;overflow:hidden}
.adm-auth::before{display:none}
.adm-auth>*{position:relative;z-index:1}
.adm-auth-card{width:100%;max-width:400px;background:#fff;border-radius:var(--radius-lg);padding:36px 32px;box-shadow:var(--shadow-lg)}
.adm-auth-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:700;font-size:1.25rem;color:var(--ink);letter-spacing:-.02em}
.adm-auth-brand .logo{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;background:var(--ink);color:#fff;font-size:1rem}
.adm-auth-tag{display:inline-flex;align-items:center;gap:7px;margin-top:16px;background:var(--bg-2);color:var(--muted);font-weight:600;font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;padding:5px 11px;border-radius:var(--radius-pill)}
.adm-auth-title{font-size:1.35rem;margin:14px 0 0;font-family:var(--font-head);font-weight:700;letter-spacing:-.02em}

/* ---- Admin inline editors -------------------------------- */
.inline-edit{display:inline-block}
.inline-edit>summary{list-style:none;cursor:pointer;display:inline-flex}
.inline-edit>summary::-webkit-details-marker{display:none}
.inline-edit[open]>summary{box-shadow:0 0 0 2px var(--c-primary-100)}
.inline-edit .pop{margin-top:10px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:left;display:block;box-shadow:var(--shadow-lg)}
.inline-edit .pop .field{margin-bottom:10px}
.adm-lessons{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
.lesson-row{border:1px solid var(--line);border-radius:var(--radius);padding:10px 14px;background:#fff}
.lesson-row .inline-edit,.lesson-row .inline-edit .pop{width:100%}

/* ---- Responsive ------------------------------------------ */
@media (max-width:1080px){
  .cols-4{grid-template-columns:repeat(2,1fr)}
  .cols-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:52px 0 60px}
  .hero-art{display:none}
  .dash{grid-template-columns:1fr}
  .dash-side{position:fixed;left:0;top:var(--site-header);bottom:0;width:270px;transform:translateX(-100%);transition:transform .22s ease;z-index:40;box-shadow:var(--shadow-lg)}
  .dash-side.open{transform:translateX(0)}
  .auth-wrap{grid-template-columns:1fr}
  .auth-aside{display:none}
  .adm{grid-template-columns:1fr}
  .adm-side{position:fixed;left:0;top:0;bottom:0;width:270px;transform:translateX(-100%);transition:transform .22s ease}
  .adm-side.open{transform:translateX(0)}
  .adm-burger{display:inline-flex}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .stats-band .stat:nth-child(2){border-right:0}
  .stats-band .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .hero-stat-row{flex-wrap:wrap}
}
@media (max-width:720px){
  body{font-size:14.5px}
  .nav-links{position:fixed;inset:var(--site-header) 0 auto 0;background:#fff;flex-direction:column;padding:10px;gap:1px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);display:none;margin-left:0}
  .nav-links.open{display:flex}
  .nav-links a{width:100%;padding:11px 14px}
  .menu-toggle{display:grid}
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .dash-main{padding:22px 18px}
  .adm-content{padding:20px 16px}
  .card-pad{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:22px}
  .footer-bottom{flex-direction:column;text-align:center}
  .flash-stack{left:16px;right:16px;max-width:none;top:74px}
  .hide-sm{display:none!important}
  .auth-form-side{padding:26px 18px}
}
@media (max-width:440px){
  .stats-band{grid-template-columns:1fr}
  .stats-band .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stats-band .stat:last-child{border-bottom:0}
}