@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root{
  --forest:#0B4F3F; --forest-light:#146B54; --amber:#D69A2D; --amber-light:#E8B658;
  --coral:#C1552F; --paper:#FAF6EC; --paper-dark:#F1EAD9;
  --ink:#16241F; --ink-soft:#4F5A54; --white:#FFFFFF; --danger:#B3402A;
  --serif:'Fraunces', serif; --sans:'Inter', sans-serif; --mono:'JetBrains Mono', monospace;
  --radius:10px; --shadow:0 10px 30px -10px rgba(11,79,63,0.18);
}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.6;}
h1,h2,h3{font-family:var(--serif);color:var(--forest);font-weight:600;}
a{color:var(--forest-light);text-decoration:none;}
button, .btn{font-family:var(--sans);cursor:pointer;border:none;border-radius:8px;font-weight:600;font-size:14px;padding:11px 22px;transition:transform .15s, box-shadow .15s;}
.btn-primary{background:var(--forest);color:var(--white);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow);}
.btn-ghost{background:transparent;border:1.5px solid rgba(11,79,63,0.2);color:var(--forest);}
.btn-danger{background:var(--danger);color:var(--white);}
.btn-sm{padding:7px 14px;font-size:13px;}
input, textarea, select{font-family:var(--sans);font-size:14px;padding:10px 12px;border:1px solid rgba(11,79,63,0.18);border-radius:6px;width:100%;background:var(--white);}
input:focus, textarea:focus, select:focus{outline:2px solid var(--forest-light);outline-offset:1px;}
label{font-size:13px;font-weight:600;color:var(--ink-soft);display:block;margin-bottom:6px;}

.app-shell{display:flex;min-height:100vh;background:var(--paper-dark);}
.sidebar{width:240px;background:linear-gradient(190deg, var(--forest), var(--forest-light) 130%);color:rgba(255,255,255,0.85);padding:24px 16px;flex-shrink:0;position:relative;}
.sidebar .logo{font-family:var(--serif);color:var(--white);font-size:22px;font-weight:700;margin-bottom:32px;display:flex;align-items:center;gap:8px;}
.sidebar .logo .dot{width:7px;height:7px;border-radius:50%;background:var(--amber);}
.sidebar nav a{display:block;color:rgba(255,255,255,0.7);padding:10px 12px;border-radius:8px;font-size:14px;font-weight:500;margin-bottom:4px;transition:background .15s, color .15s;}
.sidebar nav a:hover, .sidebar nav a.active{background:rgba(255,255,255,0.1);color:var(--white);}
.sidebar nav a.active{box-shadow:inset 2px 0 0 var(--amber);}
.main{flex:1;padding:32px 40px;max-width:1100px;}

.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;}
.card{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:0 1px 3px rgba(11,79,63,0.06);border:1px solid rgba(11,79,63,0.06);margin-bottom:20px;transition:transform .2s ease, box-shadow .2s ease;}
.card:hover{transform:translateY(-2px);box-shadow:0 12px 28px -8px rgba(11,79,63,0.14);}
.card h3{font-size:17px;margin-bottom:6px;}

.welcome-banner{background:linear-gradient(120deg, var(--forest), var(--forest-light) 75%);border-radius:var(--radius);padding:28px 32px;margin-bottom:24px;color:var(--white);display:flex;align-items:center;gap:20px;box-shadow:var(--shadow);}
.welcome-banner .avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,0.35);flex-shrink:0;}
.welcome-banner h1{color:var(--white);font-size:22px;margin:0;}
.welcome-banner p{color:rgba(255,255,255,0.75);font-size:13.5px;margin-top:3px;}

.course-card{display:flex;flex-direction:column;height:100%;}
.course-card .course-top{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.course-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(155deg, var(--forest-light), var(--forest));color:var(--white);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-weight:700;font-size:15px;flex-shrink:0;}
.course-card .card-actions{margin-top:auto;padding-top:14px;display:flex;gap:8px;}
.card-grid-auto{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid rgba(11,79,63,0.06);}
.row:last-child{border-bottom:none;}
.tag{display:inline-block;background:var(--paper-dark);color:var(--forest);font-family:var(--mono);font-size:11.5px;font-weight:600;padding:3px 9px;border-radius:5px;}
.tag.published{background:rgba(20,107,84,0.12);color:var(--forest-light);}
.tag.draft{background:rgba(214,154,45,0.15);color:#8a6b0f;}
.empty{text-align:center;color:var(--ink-soft);padding:40px 20px;font-size:14px;}
.error-msg{background:rgba(192,57,43,0.08);color:var(--danger);padding:10px 14px;border-radius:8px;font-size:13.5px;margin-bottom:14px;}
.success-msg{background:rgba(20,107,84,0.08);color:var(--forest-light);padding:10px 14px;border-radius:8px;font-size:13.5px;margin-bottom:14px;}

.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;}
.auth-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 36px;max-width:400px;width:100%;}
.auth-card .logo{font-family:var(--serif);font-size:26px;font-weight:700;color:var(--forest);margin-bottom:6px;text-align:center;}
.auth-card p.sub{text-align:center;color:var(--ink-soft);font-size:14px;margin-bottom:24px;}
.field{margin-bottom:16px;}
.auth-switch{text-align:center;font-size:13.5px;color:var(--ink-soft);margin-top:18px;}

.module-block{border:1px solid rgba(11,79,63,0.1);border-radius:10px;padding:16px;margin-bottom:14px;}
.module-block h4{font-size:15px;margin-bottom:10px;}
.lesson-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;font-size:13.5px;border-bottom:1px dashed rgba(11,79,63,0.08);}
.lesson-row:last-child{border-bottom:none;}
.lesson-row .video-status{font-size:12px;color:var(--forest-light);font-weight:600;}
.lesson-row .video-status.missing{color:var(--ink-soft);}

@media(max-width:800px){
  .app-shell{flex-direction:column;}
  .sidebar{width:100%;padding:14px 16px;display:flex;align-items:center;gap:14px;min-height:auto;}
  .sidebar .logo{margin-bottom:0;flex-shrink:0;}
  .sidebar nav{display:flex;gap:4px;overflow-x:auto;flex:1;-webkit-overflow-scrolling:touch;scrollbar-width:none;}
  .sidebar nav::-webkit-scrollbar{display:none;}
  .sidebar nav a{white-space:nowrap;margin-bottom:0;}
  .sidebar > div:last-child{position:static !important;left:auto !important;right:auto !important;bottom:auto !important;width:auto !important;flex-shrink:0;}
  .sidebar > div:last-child .btn{width:auto !important;padding:8px 14px;}
  .main{padding:20px;max-width:100%;}
  .welcome-banner{flex-direction:column;align-items:flex-start;text-align:left;padding:20px;}
  .grid-2{grid-template-columns:1fr;}
}
@media(max-width:480px){
  .card-grid-auto{grid-template-columns:1fr;}
  .welcome-banner .avatar{width:44px;height:44px;}
  .main{padding:16px;}
  .auth-card{padding:28px 22px;}
}

/* ===== Accessibility (WCAG 2.2) ===== */

/* Visible for screen readers only, until the element receives focus —
   used for the skip-to-content link and any other sighted-hidden text. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.sr-only:focus, .sr-only:focus-within{position:fixed;top:12px;left:12px;width:auto;height:auto;padding:12px 20px;margin:0;overflow:visible;clip:auto;white-space:normal;z-index:1000;background:var(--forest);color:var(--white);border-radius:8px;font-weight:600;font-size:14px;box-shadow:var(--shadow);}

/* A consistent, high-contrast focus ring for keyboard navigation across
   every interactive element — layered on top of (not replacing) each
   browser's own default focus behavior. Mouse/touch clicks don't trigger
   :focus-visible, so this never shows up as a "flash" on a button tap. */
a:focus-visible, button:focus-visible, .btn:focus-visible,
input:focus-visible, textarea:focus-visible, select:focus-visible,
[tabindex]:focus-visible{
  outline:2.5px solid var(--amber);
  outline-offset:2px;
  border-radius:4px;
}
input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2.5px solid var(--forest-light);
  outline-offset:1px;
}

/* Respect a system-level request to minimize motion — cards/buttons still
   change state, they just don't animate the transition. */
@media(prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration:0.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* Toggle switch — used for maintenance mode and similar on/off admin settings */
.switch{position:relative;display:inline-block;width:46px;height:26px;flex-shrink:0;}
.switch input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer;}
.switch-track{position:absolute;inset:0;background:rgba(11,79,63,0.18);border-radius:999px;transition:background .2s;}
.switch-thumb{position:absolute;top:3px;left:3px;width:20px;height:20px;background:var(--white);border-radius:50%;box-shadow:0 1px 3px rgba(0,0,0,0.25);transition:transform .2s;}
.switch input:checked ~ .switch-track{background:var(--forest);}
.switch input:checked ~ .switch-track .switch-thumb{transform:translateX(20px);}
.switch input:focus-visible ~ .switch-track{outline:2.5px solid var(--amber);outline-offset:2px;}

/* Floating scroll-to-top button — appears once the page has scrolled down */
.scroll-top-btn{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--forest);color:var(--white);border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:19px;
  box-shadow:0 6px 18px rgba(11,36,31,0.25);z-index:500;
  opacity:0;transform:translateY(16px) scale(0.85);pointer-events:none;
  transition:opacity .25s ease, transform .25s ease, background .2s;
}
.scroll-top-btn.visible{opacity:1;transform:translateY(0) scale(1);pointer-events:auto;}
.scroll-top-btn:hover{background:var(--forest-light);transform:translateY(-3px) scale(1.05);}
@media(max-width:600px){.scroll-top-btn{right:14px;bottom:14px;width:42px;height:42px;}}

/* ===== Back-to-site link (shared floating pill on auth pages) ===== */
.back-link{position:fixed;top:24px;right:28px;font-size:13.5px;font-weight:600;color:var(--forest);z-index:50;background:var(--white);border:1px solid rgba(11,79,63,0.16);padding:8px 18px 8px 8px;border-radius:30px;box-shadow:0 2px 10px rgba(11,36,31,0.06);transition:box-shadow .2s ease, transform .2s ease, background .2s ease;display:inline-flex;align-items:center;gap:9px;animation:backLinkIn .5s ease both;}
.back-link:hover{box-shadow:0 8px 20px rgba(11,36,31,0.12);transform:translateY(-1px);background:var(--paper);}
.back-link-icon{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;flex-shrink:0;border-radius:50%;background:rgba(11,79,63,0.1);color:var(--forest);transition:transform .3s cubic-bezier(.34,1.56,.64,1), background .2s ease, color .2s ease;}
.back-link:hover .back-link-icon{transform:translateX(-3px);background:var(--forest);color:#fff;}
@keyframes backLinkIn{from{opacity:0;transform:translateY(-10px);}to{opacity:1;transform:translateY(0);}}

/* ===== Scroll-to-top button (injected by js/ui-extras.js on every page) ===== */
#scrollTopBtn{position:fixed;bottom:24px;right:24px;width:46px;height:46px;border-radius:50%;background:var(--forest);color:#fff;border:none;display:flex;align-items:center;justify-content:center;font-size:19px;cursor:pointer;box-shadow:0 6px 18px rgba(11,36,31,0.25);opacity:0;visibility:hidden;transform:translateY(14px) scale(0.9);transition:opacity .25s ease, transform .25s ease, visibility .25s ease, background .2s ease;z-index:900;}
#scrollTopBtn.visible{opacity:1;visibility:visible;transform:translateY(0) scale(1);}
#scrollTopBtn:hover{background:var(--forest-light);}

@media(prefers-reduced-motion: reduce){
  .back-link{animation:none;}
  #scrollTopBtn{transition:opacity .15s ease, visibility .15s ease;}
}