/* ==========================================================================
   Scena — design system
   3D transforms, gradients, view transitions, glassmorphism.
   ========================================================================== */

:root {
  /* Palette */
  --gold: #D4A03A;
  --gold-2: #E8B347;
  --gold-dark: #A07A2A;
  --blue: #4A7EC7;
  --blue-2: #6B99DC;
  --blue-dark: #2E5FA3;
  --purple: #8B5CF6;
  --purple-2: #A78BFA;
  --green: #10B981;
  --green-2: #34D399;
  --red: #EF4444;
  --red-2: #F87171;
  --ink: #0F172A;
  --ink-2: #1E293B;
  --ink-3: #334155;
  --text1: #0F172A;
  --text2: #475569;
  --text3: #94A3B8;
  --bg: #F8FAFC;
  --bg-2: #EEF2F8;
  --card: #FFFFFF;
  --border: #E2E8F0;
  --border-2: #CBD5E1;

  /* Gradients */
  --grad-gold:   linear-gradient(135deg, #E8B347 0%, #D4A03A 50%, #A07A2A 100%);
  --grad-blue:   linear-gradient(135deg, #6B99DC 0%, #4A7EC7 50%, #2E5FA3 100%);
  --grad-purple: linear-gradient(135deg, #A78BFA 0%, #8B5CF6 50%, #6D28D9 100%);
  --grad-ink:    linear-gradient(135deg, #334155 0%, #1E293B 50%, #0F172A 100%);
  --grad-warm:   linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
  --grad-cool:   linear-gradient(135deg, #DBEAFE 0%, #BFDBFE 100%);
  --grad-bg:     radial-gradient(ellipse at top left, #FEF3C7 0%, transparent 40%),
                 radial-gradient(ellipse at bottom right, #DBEAFE 0%, transparent 50%),
                 #F8FAFC;

  /* Elevation (layered 3D shadows) */
  --shadow-sm:  0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 1px rgba(15, 23, 42, 0.03);
  --shadow-md:  0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.05);
  --shadow-lg:  0 10px 15px -3px rgba(15, 23, 42, 0.10), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
  --shadow-xl:  0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 10px 10px -5px rgba(15, 23, 42, 0.06);
  --shadow-3d:  0 25px 50px -12px rgba(15, 23, 42, 0.25),
                0 4px 8px -4px rgba(15, 23, 42, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.6);
  --shadow-glow-gold: 0 10px 40px -10px rgba(212, 160, 58, 0.45);
  --shadow-glow-blue: 0 10px 40px -10px rgba(74, 126, 199, 0.45);
  --shadow-glow-purple: 0 10px 40px -10px rgba(139, 92, 246, 0.45);

  /* Radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-2xl: 28px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 0.15s;
  --t-med: 0.3s;
  --t-slow: 0.5s;

  --nav-h: 64px;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text1);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated ambient gradient background on auth/landing pages */
body.with-ambient {
  background: var(--grad-bg);
  background-size: 200% 200%;
  animation: ambient 18s ease-in-out infinite;
}
@keyframes ambient {
  0%, 100% { background-position: 0% 0%; }
  50%      { background-position: 100% 100%; }
}

a { color: var(--blue-dark); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--blue); }

h1, h2, h3, h4 { font-family: inherit; letter-spacing: -0.01em; }

/* ==========================================================================
   View transitions (Chrome/Edge; degrades gracefully elsewhere)
   ========================================================================== */
@view-transition { navigation: auto; }
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.35s;
  animation-timing-function: var(--ease-out);
}
::view-transition-old(root) {
  animation-name: vt-fade-slide-out;
}
::view-transition-new(root) {
  animation-name: vt-fade-slide-in;
}
@keyframes vt-fade-slide-out {
  to { opacity: 0; transform: translateY(-8px); }
}
@keyframes vt-fade-slide-in {
  from { opacity: 0; transform: translateY(12px); }
}

/* Shared page-enter animation (for clients without VT support) */
.page-enter {
  animation: page-enter 0.45s var(--ease-out) both;
}
@keyframes page-enter {
  from { opacity: 0; transform: translateY(14px) scale(0.99); }
  to   { opacity: 1; transform: none; }
}

/* ==========================================================================
   Icons (inline SVG)
   ========================================================================== */
.icon {
  display: inline-block;
  vertical-align: -0.18em;
  flex-shrink: 0;
  color: currentColor;
}
.icon-lg { width: 28px !important; height: 28px !important; }
.icon-xl { width: 48px !important; height: 48px !important; }
.icon-inverse { color: #fff; }

/* ==========================================================================
   Top nav
   ========================================================================== */
.topnav {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  height: var(--nav-h);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topnav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 18px;
  color: var(--ink) !important;
  letter-spacing: -0.02em;
}
.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--grad-gold);
  display: inline-grid;
  place-items: center;
  color: #fff;
  font-size: 16px;
  box-shadow: var(--shadow-glow-gold);
  transform-style: preserve-3d;
  transition: transform var(--t-med) var(--ease-spring);
}
.brand:hover .brand-icon { transform: rotateZ(-8deg) scale(1.08); text-decoration: none; }
.brand:hover { text-decoration: none; }

.topnav-links {
  display: flex;
  gap: 2px;
  flex: 1;
  margin-left: 12px;
  overflow-x: auto;
  scrollbar-width: none;
}
.topnav-links::-webkit-scrollbar { display: none; }
.topnav-links a {
  padding: 8px 14px;
  border-radius: 10px;
  color: var(--text2);
  font-weight: 700;
  font-size: 13px;
  white-space: nowrap;
  transition: all var(--t-fast);
}
.topnav-links a:hover {
  background: var(--bg-2);
  color: var(--ink);
  text-decoration: none;
}
.topnav-links a.active {
  background: var(--ink);
  color: #fff;
}

.topnav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
.user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--grad-blue);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 13px;
}
.user-info { line-height: 1.2; }
.user-name { font-weight: 800; color: var(--ink); }
.user-role { font-size: 11px; color: var(--text3); font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.btn-link {
  background: none; border: none;
  color: var(--text2);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all var(--t-fast);
}
.btn-link:hover { background: #FEE2E2; color: var(--red); }

/* ==========================================================================
   Container / layout
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 64px;
}
.container-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 24px 64px;
}

.flash {
  padding: 12px 16px;
  border-radius: var(--r-md);
  margin-bottom: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  animation: flash-in 0.35s var(--ease-out);
}
@keyframes flash-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.flash-info    { background: #EFF6FF; color: var(--blue-dark); border-color: #BFDBFE; }
.flash-success { background: #ECFDF5; color: #047857;           border-color: #A7F3D0; }
.flash-warning { background: #FFFBEB; color: var(--gold-dark);  border-color: #FDE68A; }
.flash-error   { background: #FEF2F2; color: #B91C1C;           border-color: #FCA5A5; }

/* ==========================================================================
   Greeting / section headers
   ========================================================================== */
.page { padding: 0; }
.greeting {
  margin: 0 0 28px;
}
.greeting h1 {
  margin: 0 0 6px;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--ink) 0%, var(--blue-dark) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.greeting p {
  margin: 0;
  color: var(--text2);
  font-size: 15px;
}

.section-title {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text3);
  margin: 28px 0 12px;
}

/* ==========================================================================
   Cards (3D depth, hover tilt)
   ========================================================================== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-med), transform var(--t-med);
}
.card:hover { box-shadow: var(--shadow-md); }

.card-3d {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 22px;
  box-shadow: var(--shadow-lg);
  transform-style: preserve-3d;
  transition: transform 0.4s var(--ease-spring), box-shadow var(--t-med);
  will-change: transform;
}
.card-3d:hover {
  transform: translateY(-4px) rotateX(2deg) rotateY(-2deg);
  box-shadow: var(--shadow-xl);
}

.card-gradient {
  border: none;
  color: #fff;
  padding: 22px;
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  background: var(--grad-ink);
  position: relative;
  overflow: hidden;
}
.card-gradient.gold   { background: var(--grad-gold);   box-shadow: var(--shadow-glow-gold); }
.card-gradient.blue   { background: var(--grad-blue);   box-shadow: var(--shadow-glow-blue); }
.card-gradient.purple { background: var(--grad-purple); box-shadow: var(--shadow-glow-purple); }
.card-gradient::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255,255,255,0.22), transparent 60%);
  pointer-events: none;
}

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .topnav-user .user-info { display: none; }
  .greeting h1 { font-size: 26px; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--r-md);
  padding: 11px 18px;
  font: inherit;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  min-height: 44px;
  position: relative;
  overflow: hidden;
  transition: transform var(--t-fast), box-shadow var(--t-med), background var(--t-med);
  text-decoration: none !important;
  letter-spacing: -0.01em;
}
/* Hover feedback via filter, not transform.  A 1px translateY on hover
   creates a "flicker loop": cursor at the edge → button lifts → cursor
   no longer over button → hover ends → button drops → cursor back on
   it → repeat.  Brightness shift gives the same "alive" feel without
   moving the bounding box. */
.btn:hover { filter: brightness(1.04); }
.btn:active { filter: brightness(0.96); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; filter: none !important; }

.btn-primary  { background: var(--grad-gold);   color: #fff; box-shadow: var(--shadow-md); }
.btn-primary:hover  { box-shadow: var(--shadow-glow-gold); }
.btn-secondary { background: var(--grad-blue);  color: #fff; box-shadow: var(--shadow-md); }
.btn-secondary:hover { box-shadow: var(--shadow-glow-blue); }
.btn-purple    { background: var(--grad-purple); color: #fff; box-shadow: var(--shadow-md); }
.btn-purple:hover    { box-shadow: var(--shadow-glow-purple); }
.btn-dark      { background: var(--grad-ink);   color: #fff; box-shadow: var(--shadow-md); }
.btn-dark:hover      { box-shadow: var(--shadow-lg); }
.btn-ghost     { background: transparent; color: var(--text2); }
.btn-ghost:hover     { background: var(--bg-2); color: var(--ink); }
.btn-outline   { background: var(--card); border: 1.5px solid var(--border-2); color: var(--ink); }
.btn-outline:hover   { border-color: var(--ink); }
.btn-success   { background: linear-gradient(135deg, #34D399, #10B981); color: #fff; box-shadow: var(--shadow-md); }
.btn-danger    { background: linear-gradient(135deg, #F87171, #EF4444); color: #fff; box-shadow: var(--shadow-md); }
.btn-block     { width: 100%; }
.btn-sm        { padding: 7px 12px; min-height: 34px; font-size: 13px; }
.btn-lg        { padding: 14px 24px; min-height: 52px; font-size: 16px; border-radius: var(--r-lg); }

/* Shine animation on primary */
.btn-primary::after,
.btn-secondary::after,
.btn-purple::after {
  content: "";
  position: absolute;
  top: -50%; left: -60%;
  width: 40%; height: 200%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  transform: rotate(25deg);
  transition: left var(--t-slow);
  pointer-events: none;
}
.btn-primary:hover::after,
.btn-secondary:hover::after,
.btn-purple:hover::after { left: 120%; }

/* ==========================================================================
   Check-in card
   ========================================================================== */
.checkin-card { text-align: center; padding: 28px 20px; }
.checkin-btn {
  width: 108px; height: 108px;
  border-radius: 50%; border: none;
  background: var(--grad-gold);
  color: #fff; font-size: 40px; cursor: pointer;
  box-shadow: var(--shadow-glow-gold), inset 0 -4px 12px rgba(0,0,0,0.1);
  margin-bottom: 12px;
  transition: transform var(--t-med) var(--ease-spring), box-shadow var(--t-med);
  animation: pulse 2.4s ease-in-out infinite;
}
.checkin-btn:hover { transform: scale(1.05) rotateZ(-5deg); }
.checkin-btn.checked {
  background: linear-gradient(135deg, #34D399, #10B981);
  box-shadow: 0 10px 40px -10px rgba(16, 185, 129, 0.45);
  animation: none;
}
@keyframes pulse {
  0%, 100% { box-shadow: var(--shadow-glow-gold), inset 0 -4px 12px rgba(0,0,0,0.1); }
  50%      { box-shadow: 0 0 0 14px rgba(212, 160, 58, 0), var(--shadow-glow-gold); }
}
.checkin-label { font-weight: 800; font-size: 17px; margin-top: 6px; color: var(--ink); }
.checkin-sub   { color: var(--text2); font-size: 13px; margin-top: 4px; }

.lesson-name { font-weight: 700; font-size: 15px; color: var(--ink); }
.lesson-sub  { font-size: 12px; color: var(--text2); margin-top: 2px; }

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.badge-pending  { background: #FEF3C7; color: var(--gold-dark); }
.badge-approved { background: #D1FAE5; color: #047857; }
.badge-rejected { background: #FEE2E2; color: #B91C1C; }
.badge-info     { background: #DBEAFE; color: var(--blue-dark); }

/* ==========================================================================
   Forms
   ========================================================================== */
.input, select, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: var(--card);
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(74, 126, 199, 0.15);
}
label { font-size: 12px; color: var(--text2); font-weight: 800; display: block; margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.04em; }
.field { margin-bottom: 14px; }

/* Signup form labels from Django are lowercase — style both inputs */
form input[type="text"], form input[type="email"], form input[type="password"],
form input[type="tel"],  form input[type="number"], form input[type="date"] {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  font: inherit;
  font-size: 14px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
form input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(74, 126, 199, 0.15);
}

/* ==========================================================================
   Utility helpers
   ========================================================================== */
.stack { display: flex; flex-direction: column; gap: 10px; }
.row   { display: flex; align-items: center; gap: 10px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.text-muted  { color: var(--text2); }
.text-small  { font-size: 12px; }
.text-big    { font-size: 20px; font-weight: 800; }
.text-right  { text-align: right; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.gap-4 { gap: 4px; } .gap-8 { gap: 8px; } .gap-16 { gap: 16px; }

/* ==========================================================================
   Toast
   ========================================================================== */
.toast {
  position: fixed;
  left: 50%; top: 24px;
  transform: translateX(-50%);
  background: var(--grad-ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  z-index: 100;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.4s var(--ease-spring), toastOut 0.4s ease 2.4s forwards;
}
@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, -16px) scale(0.9); }
  to   { opacity: 1; transform: translate(-50%, 0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translate(-50%, -16px) scale(0.9); }
}

/* ==========================================================================
   Auth / landing — portal cards
   ========================================================================== */
.auth-wrap {
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  place-items: center;
  padding: 40px 20px;
}
.auth-card {
  max-width: 440px;
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  padding: 36px;
  box-shadow: var(--shadow-xl);
  animation: page-enter 0.55s var(--ease-out);
}
.auth-card h1 { margin: 0 0 6px; font-size: 28px; letter-spacing: -0.02em; }
.auth-card p.lead { margin: 0 0 22px; color: var(--text2); font-size: 15px; }
.auth-card .form-actions { margin-top: 22px; }
.auth-card .alt {
  margin-top: 18px;
  text-align: center;
  color: var(--text2);
  font-size: 13px;
}
.auth-card .role-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}
.role-badge.teacher { background: #DBEAFE; color: var(--blue-dark); }
.role-badge.student { background: #FEF3C7; color: var(--gold-dark); }
.role-badge.admin   { background: #EDE9FE; color: #6D28D9; }

.errorlist {
  color: var(--red);
  font-size: 12px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

/* Wider auth card for the rich signup form */
.auth-card-wide { max-width: 720px; }

/* Sectioned signup form */
.signup-section {
  border-top: 1px dashed var(--border-2);
  padding-top: 22px;
  margin-top: 22px;
}
.signup-section:first-of-type {
  border-top: none;
  padding-top: 6px;
  margin-top: 0;
}
.signup-section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text3);
  margin-bottom: 14px;
}

/* Role-picker cards (student / teacher) */
.role-pick {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.role-pick-card {
  position: relative;
  padding: 18px 16px;
  border: 1.5px solid var(--border-2);
  border-radius: var(--r-lg);
  background: var(--card);
  cursor: pointer;
  transition: all var(--t-fast);
}
.role-pick-card input { position: absolute; opacity: 0; pointer-events: none; }
.role-pick-card .role-pick-icon {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--bg-2);
  display: grid; place-items: center;
  color: var(--text2);
  margin-bottom: 8px;
  transition: all var(--t-fast);
}
.role-pick-card .role-pick-label {
  font-weight: 800;
  font-size: 15px;
  color: var(--ink);
}
.role-pick-card .role-pick-hint {
  font-size: 12px;
  color: var(--text2);
  margin-top: 2px;
}
.role-pick-card:hover {
  border-color: var(--blue);
  transform: translateY(-1px);
}
.role-pick-card.picked {
  border-color: var(--gold);
  background: var(--grad-warm);
  box-shadow: var(--shadow-md);
}
.role-pick-card.picked .role-pick-icon {
  background: var(--grad-gold);
  color: #fff;
}

/* Password strength meter */
.password-strength {
  margin-top: 6px;
  font-size: 12px;
  font-weight: 700;
  height: 16px;
}
.password-strength.pw-bad   { color: var(--red); }
.password-strength.pw-weak  { color: #B91C1C; }
.password-strength.pw-ok    { color: var(--gold-dark); }
.password-strength.pw-good  { color: var(--green); }
.password-strength.pw-great { color: #047857; }
.password-strength::before {
  content: '';
  display: block;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--bg-2);
  margin-bottom: 4px;
}
.password-strength.pw-bad::before   { background: linear-gradient(to right, #FCA5A5 20%, var(--bg-2) 20%); }
.password-strength.pw-weak::before  { background: linear-gradient(to right, #F87171 40%, var(--bg-2) 40%); }
.password-strength.pw-ok::before    { background: linear-gradient(to right, var(--gold) 60%, var(--bg-2) 60%); }
.password-strength.pw-good::before  { background: linear-gradient(to right, var(--green) 80%, var(--bg-2) 80%); }
.password-strength.pw-great::before { background: linear-gradient(to right, #047857 100%); }

@media (max-width: 600px) {
  .role-pick { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Landing hero
   ========================================================================== */
.hero {
  min-height: calc(100vh - var(--nav-h));
  padding: 60px 24px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.hero-inner {
  max-width: 1100px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
  animation: fade-up 0.7s var(--ease-out) both;
}
.hero-title .grad {
  background: linear-gradient(135deg, #D4A03A, #8B5CF6, #4A7EC7);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: shimmer 4s ease-in-out infinite;
}
@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
.hero-lead {
  font-size: 18px;
  color: var(--text2);
  max-width: 520px;
  line-height: 1.55;
  margin: 0 0 32px;
  animation: fade-up 0.7s var(--ease-out) 0.1s both;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  animation: fade-up 0.7s var(--ease-out) 0.2s both;
}
@keyframes fade-up { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-title { font-size: 40px; }
  .hero-actions { justify-content: center; }
  .hero-visual { margin: 0 auto; }
}

/* 3D floating visual on hero */
.hero-visual {
  position: relative;
  width: 100%;
  height: 380px;
  perspective: 1200px;
  animation: fade-up 0.9s var(--ease-out) 0.3s both;
}
.floater {
  position: absolute;
  border-radius: var(--r-2xl);
  transform-style: preserve-3d;
  box-shadow: var(--shadow-3d);
  animation: float 6s ease-in-out infinite;
}
.floater-1 {
  top: 10%; left: 10%;
  width: 62%; height: 62%;
  background: var(--grad-gold);
  animation-delay: 0s;
  transform: rotateX(8deg) rotateY(-12deg);
}
.floater-2 {
  top: 38%; left: 32%;
  width: 55%; height: 55%;
  background: var(--grad-blue);
  animation-delay: -2s;
  transform: rotateX(-6deg) rotateY(14deg);
}
.floater-3 {
  top: 60%; left: 5%;
  width: 45%; height: 45%;
  background: var(--grad-purple);
  animation-delay: -4s;
  transform: rotateX(10deg) rotateY(6deg);
}
.floater-icon {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 56px;
  color: rgba(255, 255, 255, 0.85);
}
.floater-art {
  position: absolute;
  inset: 14%;
  width: 72%;
  height: 72%;
  object-fit: contain;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.18));
  user-select: none;
  pointer-events: none;
}
.portal-icon .icon { color: #fff; }
@keyframes float {
  0%, 100% { transform: translateY(0) rotateX(var(--rx, 6deg)) rotateY(var(--ry, 0deg)); }
  50%      { transform: translateY(-18px) rotateX(var(--rx, 6deg)) rotateY(var(--ry, 0deg)); }
}

/* Ambient blobs behind hero */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  z-index: 1;
  pointer-events: none;
  animation: blob-move 20s ease-in-out infinite;
}
.blob-gold   { width: 360px; height: 360px; background: #FDE68A; top: -100px; left: -80px; }
.blob-blue   { width: 420px; height: 420px; background: #BFDBFE; bottom: -120px; right: -120px; animation-delay: -8s; }
.blob-purple { width: 300px; height: 300px; background: #DDD6FE; top: 40%; right: 30%; animation-delay: -14s; }
@keyframes blob-move {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(30px, -40px) scale(1.1); }
  66%      { transform: translate(-20px, 30px) scale(0.95); }
}

/* ==========================================================================
   Role portal (3 cards — teacher / student / admin)
   ========================================================================== */
.portal {
  max-width: 1100px;
  margin: 60px auto 0;
  padding: 0 24px;
}
.portal-title { text-align: center; margin-bottom: 32px; }
.portal-title h2 { font-size: 30px; margin: 0 0 8px; letter-spacing: -0.02em; }
.portal-title p  { color: var(--text2); font-size: 15px; margin: 0; }

.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  perspective: 1400px;
}
@media (max-width: 860px) { .portal-grid { grid-template-columns: 1fr; } }

.portal-card {
  position: relative;
  padding: 32px 24px;
  border-radius: var(--r-2xl);
  background: var(--card);
  border: 1px solid var(--border);
  text-align: center;
  text-decoration: none !important;
  color: var(--ink);
  box-shadow: var(--shadow-md);
  transition: transform 0.4s var(--ease-spring), box-shadow var(--t-med);
  overflow: hidden;
  transform-style: preserve-3d;
}
.portal-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--card-accent, var(--grad-gold));
  opacity: 0;
  transition: opacity var(--t-med);
  z-index: 0;
}
.portal-card > * { position: relative; z-index: 1; }
.portal-card:hover {
  transform: translateY(-8px) rotateX(4deg);
  box-shadow: var(--shadow-xl);
  color: #fff;
}
.portal-card:hover::before { opacity: 1; }
.portal-card.teacher { --card-accent: var(--grad-blue); }
.portal-card.student { --card-accent: var(--grad-gold); }
.portal-card.admin   { --card-accent: var(--grad-purple); }

.portal-icon {
  width: 64px; height: 64px;
  border-radius: 20px;
  background: var(--card-accent);
  display: grid;
  place-items: center;
  font-size: 30px;
  color: #fff;
  margin: 0 auto 16px;
  box-shadow: var(--shadow-md);
  transition: transform var(--t-med) var(--ease-spring);
}
.portal-card:hover .portal-icon { transform: scale(1.1) rotateZ(-8deg); background: rgba(255,255,255,0.25); }
.portal-card h3 { margin: 0 0 8px; font-size: 20px; font-weight: 800; letter-spacing: -0.01em; }
.portal-card p  { margin: 0 0 16px; color: var(--text2); font-size: 13px; line-height: 1.5; }
.portal-card:hover p { color: rgba(255,255,255,0.9); }
.portal-card .portal-cta {
  display: inline-flex;
  gap: 4px;
  font-weight: 800;
  font-size: 13px;
  color: var(--text2);
}
.portal-card:hover .portal-cta { color: #fff; }
.portal-card .portal-arrow {
  transition: transform var(--t-med);
}
.portal-card:hover .portal-arrow { transform: translateX(4px); }

/* ==========================================================================
   Superadmin layout
   ========================================================================== */
.sa-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  background: var(--bg);
}
.sa-sidebar {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.9);
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sa-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  padding: 6px 10px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 14px;
}
.sa-brand-icon {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--grad-gold);
  display: grid; place-items: center;
  box-shadow: var(--shadow-glow-gold);
}
.sa-nav { display: flex; flex-direction: column; gap: 2px; }
.sa-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13.5px;
  font-weight: 700;
  border-radius: 8px;
  transition: all var(--t-fast);
}
.sa-nav a:hover { background: rgba(255,255,255,0.06); color: #fff; text-decoration: none; }
.sa-nav a:active,
.sa-nav a.is-pressing {
  background: rgba(212, 160, 58, 0.32);
  color: #fff;
  transform: scale(0.98);
}
.sa-nav a.active {
  background: linear-gradient(90deg, rgba(212,160,58,0.28) 0%, rgba(212,160,58,0.10) 100%);
  color: #fff;
  font-weight: 800;
  box-shadow: inset 3px 0 0 var(--gold-2);
  padding-left: 14px;
}
.sa-nav a.active .sa-nav-icon { opacity: 1; color: var(--gold-2); }

/* Clickable KPI tiles (dashboard) */
.kpi.kpi-link, .kpi-soft.kpi-link {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
}
.kpi.kpi-link:hover, .kpi-soft.kpi-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(15,23,42,0.12);
  text-decoration: none;
}
.kpi.kpi-link:active, .kpi-soft.kpi-link:active {
  transform: translateY(-1px) scale(0.99);
}
.kpi.kpi-link::after, .kpi-soft.kpi-link::after {
  content: "→";
  position: absolute;
  top: 12px; right: 14px;
  color: rgba(15,23,42,0.25);
  font-size: 16px;
  font-weight: 800;
  transition: transform 0.2s ease, color 0.2s ease;
}
.kpi.kpi-link:hover::after, .kpi-soft.kpi-link:hover::after {
  transform: translateX(4px);
  color: var(--gold-2);
}
.sa-nav-icon {
  width: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
}
.sa-nav-group {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.35);
  padding: 16px 12px 6px;
  font-weight: 800;
}
.sa-main {
  padding: 28px 32px 64px;
  max-width: 100%;
  overflow-x: auto;
}
.sa-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.sa-header h1 { margin: 0; font-size: 26px; letter-spacing: -0.02em; }
.sa-header p  { margin: 4px 0 0; color: var(--text2); font-size: 14px; }
.sa-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}
@media (max-width: 860px) {
  .sa-shell { grid-template-columns: 1fr; }
  .sa-sidebar { position: static; height: auto; }
  .sa-nav { flex-direction: row; overflow-x: auto; flex-wrap: nowrap; }
  .sa-nav a { white-space: nowrap; }
}

/* KPI cards on dashboard */
.kpi {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px;
  transition: transform var(--t-med) var(--ease-spring), box-shadow var(--t-med);
}
.kpi:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.kpi-label { color: var(--text2); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.kpi-value { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; margin-top: 4px; color: var(--ink); }
.kpi-hint  { color: var(--text3); font-size: 12px; margin-top: 2px; }
.kpi-icon {
  float: right;
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  font-size: 20px;
  color: #fff;
  background: var(--grad-gold);
  box-shadow: var(--shadow-sm);
  margin-left: 12px;
}
.kpi-icon.blue   { background: var(--grad-blue); }
.kpi-icon.purple { background: var(--grad-purple); }
.kpi-icon.dark   { background: var(--grad-ink); }

/* Dashboard hero */
.dash-hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 26px 28px;
  background:
    radial-gradient(circle at top right, rgba(212, 160, 58, 0.12), transparent 50%),
    radial-gradient(circle at bottom left, rgba(74, 126, 199, 0.08), transparent 50%),
    var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
}
.dash-hero-text { flex: 1; min-width: 0; }
.dash-hero-actions { display: flex; gap: 8px; flex-wrap: wrap; }
@media (max-width: 720px) {
  .dash-hero { flex-direction: column; padding: 22px; }
  .dash-hero-actions { width: 100%; }
  .dash-hero-actions .btn { flex: 1; }
}

/* "What to do" todo cards */
.todo-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--gold);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  text-decoration: none !important;
  color: inherit;
  transition: transform var(--t-fast), box-shadow var(--t-med);
}
.todo-card:hover {
  transform: translateX(2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.todo-card.todo-blue   { border-left-color: var(--blue); }
.todo-card.todo-purple { border-left-color: var(--purple); }
.todo-card.todo-dark   { border-left-color: var(--ink); }
.todo-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--grad-gold);
  display: grid; place-items: center;
  box-shadow: var(--shadow-sm);
}
.todo-card.todo-blue   .todo-icon { background: var(--grad-blue); }
.todo-card.todo-purple .todo-icon { background: var(--grad-purple); }
.todo-card.todo-dark   .todo-icon { background: var(--grad-ink); }
.todo-body { min-width: 0; }
.todo-title { font-weight: 800; color: var(--ink); margin-bottom: 2px; font-size: 14.5px; }
.todo-hint  { font-size: 12.5px; color: var(--text2); line-height: 1.45; }
.todo-cta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text3);
  white-space: nowrap;
}
.todo-card:hover .todo-cta { color: var(--ink); }

/* Soft KPI (used for activity row) */
.kpi-soft {
  background: linear-gradient(180deg, rgba(255,255,255,0.6), rgba(255,255,255,1));
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 20px;
}
.kpi-soft .kpi-label { color: var(--text2); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; }
.kpi-soft .kpi-value { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; margin-top: 2px; color: var(--ink); }
.kpi-soft .kpi-hint  { color: var(--text3); font-size: 12px; margin-top: 2px; }

/* Empty states */
.empty-state {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
  color: var(--green);
}
.empty-state-mini {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 4px;
  color: var(--text2);
  font-size: 13px;
}

/* Signup / lesson row in cards */
.signup-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border-radius: var(--r-md);
  text-decoration: none !important;
  color: inherit;
  transition: background var(--t-fast);
  margin: 0 -4px;
}
.signup-row:hover { background: var(--bg-2); text-decoration: none; }

.rank-badge {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--bg-2);
  color: var(--text2);
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 12px;
}
.signup-row:first-child .rank-badge { background: var(--grad-gold); color: #fff; }
.signup-row:nth-child(2) .rank-badge { background: #E2E8F0; color: var(--ink); }
.signup-row:nth-child(3) .rank-badge { background: #FED7AA; color: #92400E; }

/* Chart */
.chart-wrap {
  position: relative;
  padding: 4px 0 0;
}
.chart-axis {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text3);
  margin-top: 6px;
  padding: 0 4px;
}
.chart-tooltip {
  position: absolute;
  transform: translate(-50%, -100%);
  background: var(--ink);
  color: #fff;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: var(--shadow-md);
  z-index: 5;
}
.chart-tooltip[hidden] { display: none; }
.bar-group { cursor: pointer; transition: opacity var(--t-fast); }
.bar-group:hover { opacity: 0.85; }
.bar-group:hover [data-bar] { filter: brightness(1.1); }

/* Tables */
.table-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.table th, .table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.table th {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text3);
  background: var(--bg-2);
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--bg-2); }

.table-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.table-toolbar + .table-wrap {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  border-top: none;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 80;
  display: grid;
  place-items: center;
  animation: fade-in var(--t-fast);
}
.modal {
  background: var(--card);
  border-radius: var(--r-xl);
  padding: 28px;
  max-width: 520px;
  width: calc(100% - 40px);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: modal-in 0.35s var(--ease-spring);
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: none; }
}
.modal h2 { margin: 0 0 14px; font-size: 20px; }

/* Calendar grid (Phase 24) */
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.cal-weekday {
  padding: 8px;
  background: var(--bg-2);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text2);
  text-align: center;
}
.cal-cell {
  min-height: 110px;
  padding: 8px;
  background: var(--card);
  position: relative;
}
.cal-cell.cal-other { background: var(--bg-2); }
.cal-cell.cal-other .cal-day-num { color: var(--text3); }
.cal-cell.cal-today { background: linear-gradient(180deg, var(--gold-light), var(--card)); }
.cal-day-num {
  font-size: 12px;
  font-weight: 800;
  color: var(--text1);
  margin-bottom: 6px;
}
.cal-pill {
  display: flex;
  gap: 4px;
  padding: 3px 6px;
  margin-bottom: 3px;
  border-radius: 5px;
  font-size: 11px;
  background: var(--blue-light);
  color: var(--blue-dark);
  text-decoration: none !important;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cal-pill:hover { background: var(--blue); color: #fff; text-decoration: none; }
.cal-pill-time { font-weight: 800; flex-shrink: 0; }
.cal-pill-text { overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.cal-pill-more { background: transparent; color: var(--text3); padding-left: 0; cursor: default; pointer-events: none; }

/* Drag-drop kanban (Phase 25) */
.kanban-card[draggable="true"] { user-select: none; }
.kanban-card.dragging { opacity: 0.4; }
.kanban-col.drag-over {
  background: var(--gold-light);
  outline: 2px dashed var(--gold);
  outline-offset: -4px;
}

/* Bulk action toolbar (sticky) */
.bulk-toolbar {
  position: sticky;
  bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xl);
  animation: bulk-in 0.3s var(--ease-spring);
}
.bulk-toolbar .lesson-name { color: #fff; }
@keyframes bulk-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* Kanban */
.kanban {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 900px) { .kanban { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .kanban { grid-template-columns: 1fr; } }
.kanban-col {
  background: var(--bg-2);
  border-radius: var(--r-lg);
  padding: 12px;
  min-height: 200px;
}
.kanban-col h3 {
  margin: 0 0 10px; font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text2);
  display: flex; justify-content: space-between; align-items: center;
}
.kanban-col .count {
  background: var(--card);
  color: var(--text2);
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 800;
}
.kanban-card {
  background: var(--card);
  border-radius: var(--r-md);
  padding: 12px;
  margin-bottom: 8px;
  box-shadow: var(--shadow-sm);
  cursor: grab;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.kanban-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }