/* ================================================================
   CampusOS – Student Success Dashboard
   style.css  |  Premium SaaS Design System v2.0
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Blue palette */
  --blue-50:  #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-900: #1e3a8a;

  --primary:       var(--blue-600);
  --primary-dark:  var(--blue-700);
  --primary-light: var(--blue-50);

  --cyan:       #06b6d4;
  --green:      #10b981;
  --green-bg:   #d1fae5;
  --amber:      #f59e0b;
  --amber-bg:   #fef3c7;
  --red:        #ef4444;
  --red-bg:     #fee2e2;
  --violet:     #8b5cf6;
  --violet-bg:  #ede9fe;
  --orange:     #f97316;
  --orange-bg:  #ffedd5;

  /* Surfaces */
  --bg:          #f1f5f9;
  --surface:     #ffffff;
  --surface-alt: #f8fafc;

  /* Sidebar */
  --sidebar-bg:     #0b1120;
  --sidebar-border: rgba(255,255,255,0.06);
  --sidebar-text:   #94a3b8;

  /* Text */
  --text-primary:   #0f172a;
  --text-secondary: #475569;
  --text-muted:     #94a3b8;
  --text-faint:     #cbd5e1;

  --border:         #e2e8f0;
  --border-focus:   var(--blue-400);

  /* Dimensions */
  --sidebar-w: 264px;
  --header-h:  68px;

  /* Radii */
  --r-xs: 6px;
  --r-sm: 8px;
  --r:    12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-2xl:28px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.05);
  --shadow:    0 4px 12px rgba(15,23,42,0.07), 0 1px 4px rgba(15,23,42,0.05);
  --shadow-md: 0 8px 24px rgba(15,23,42,0.10), 0 2px 8px rgba(15,23,42,0.06);
  --shadow-lg: 0 16px 48px rgba(15,23,42,0.14), 0 4px 16px rgba(15,23,42,0.08);
  --shadow-blue: 0 4px 20px rgba(37,99,235,0.28);
  --shadow-blue-lg: 0 8px 32px rgba(37,99,235,0.38);

  /* Motion */
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur:         220ms;
  --dur-fast:    140ms;
  --dur-slow:    400ms;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

/* ── Scrollbar ─────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Global Keyframes ──────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes pulse-ring {
  0%   { transform: scale(1); opacity: 0.6; }
  60%  { transform: scale(1.5); opacity: 0; }
  100% { transform: scale(1.5); opacity: 0; }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-6px); }
}

@keyframes orb-drift {
  0%,100% { transform: translate(0,0) scale(1); }
  33%     { transform: translate(30px,-20px) scale(1.05); }
  66%     { transform: translate(-20px,20px) scale(0.95); }
}

/* ════════════════════════════════════════════════════════════════
   SIDEBAR
   ════════════════════════════════════════════════════════════════ */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  height: 100vh;
  position: fixed;
  top: 0; left: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease);
  border-right: 1px solid var(--sidebar-border);
  overflow: hidden;
}

.sidebar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 10%, rgba(37,99,235,0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 90%, rgba(139,92,246,0.10) 0%, transparent 60%);
  pointer-events: none;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 22px 18px 18px;
  border-bottom: 1px solid var(--sidebar-border);
  position: relative;
  z-index: 1;
}

.brand-icon {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--blue-600), #7c3aed);
  border-radius: var(--r-sm);
  font-size: 1.1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(37,99,235,0.4);
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.3px;
  display: block;
  line-height: 1.1;
}

.brand-tagline {
  font-size: 0.62rem;
  color: var(--sidebar-text);
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  display: block;
  margin-top: 1px;
}

.nav-section-label {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.3px;
  color: rgba(148,163,184,0.45);
  padding: 12px 16px 5px;
  display: block;
}

.sidebar-nav {
  flex: 1;
  padding: 10px 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  position: relative;
  z-index: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--sidebar-text);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  width: 100%;
  text-align: left;
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease-spring);
  position: relative;
}

.nav-item:hover {
  background: rgba(255,255,255,0.06);
  color: #e2e8f0;
  transform: translateX(2px);
}

.nav-item.active {
  background: rgba(37,99,235,0.22);
  color: #fff;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--blue-500);
  border-radius: 0 99px 99px 0;
  box-shadow: 0 0 8px rgba(59,130,246,0.6);
}

.nav-icon  { font-size: 1rem; width: 20px; text-align: center; flex-shrink: 0; opacity: 0.85; }
.nav-label { font-weight: 500; letter-spacing: 0.1px; }
.nav-item.active .nav-icon { opacity: 1; }

.sidebar-footer {
  padding: 12px 10px 14px;
  border-top: 1px solid var(--sidebar-border);
  position: relative;
  z-index: 1;
}

.dh-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 11px 14px;
  background: linear-gradient(135deg, #7c3aed, var(--blue-600));
  color: #fff;
  border-radius: var(--r-sm);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--dur) var(--ease);
  box-shadow: 0 4px 14px rgba(124,58,237,0.3);
  position: relative;
  overflow: hidden;
}

.dh-button::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.12), transparent);
  opacity: 0;
  transition: opacity var(--dur-fast);
}

.dh-button:hover::after { opacity: 1; }
.dh-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124,58,237,0.45);
}

/* ════════════════════════════════════════════════════════════════
   MAIN CONTENT
   ════════════════════════════════════════════════════════════════ */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ════════════════════════════════════════════════════════════════
   TOP HEADER — Developer Profile Card
   ════════════════════════════════════════════════════════════════ */
.top-header {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

/* Developer profile card */
.dev-profile-card {
  display: flex;
  align-items: center;
  gap: 13px;
}

.dev-avatar-ring {
  position: relative;
  flex-shrink: 0;
}

.dev-avatar {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.88rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  box-shadow: 0 0 0 3px var(--blue-100), var(--shadow-blue);
  position: relative;
  z-index: 1;
}

.dev-avatar-pulse {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: transparent;
  border: 2px solid var(--blue-400);
  animation: pulse-ring 2.5s ease-out infinite;
  pointer-events: none;
}

.dev-details { display: flex; flex-direction: column; gap: 1px; }

.dev-by-label {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  color: var(--text-muted);
  display: block;
}

.dev-name {
  font-size: 0.93rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.2px;
  display: block;
  line-height: 1.2;
}

.dev-email {
  font-size: 0.73rem;
  color: var(--blue-600);
  font-weight: 500;
  display: block;
}

/* Header right */
.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  background: var(--blue-50);
  color: var(--blue-700);
  border-radius: 20px;
  font-size: 0.73rem;
  font-weight: 700;
  border: 1px solid var(--blue-200);
  letter-spacing: 0.2px;
}

.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(16,185,129,0.6);
  animation: pulse-ring 2s ease-out infinite;
}

.current-date {
  font-size: 0.73rem;
  color: var(--text-muted);
  font-weight: 500;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 12px;
  white-space: nowrap;
}

/* ════════════════════════════════════════════════════════════════
   MODULES
   ════════════════════════════════════════════════════════════════ */
.module {
  display: none;
  padding: 28px 30px 48px;
  flex: 1;
  animation: fadeInUp 0.3s var(--ease) both;
}

.module.active { display: block; }

.module-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}

.module-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.6px;
  line-height: 1.15;
}

.module-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 4px;
}

/* ════════════════════════════════════════════════════════════════
   WELCOME BANNER
   ════════════════════════════════════════════════════════════════ */
.welcome-banner {
  background: linear-gradient(135deg, var(--blue-700) 0%, var(--blue-600) 40%, var(--cyan) 100%);
  border-radius: var(--r-xl);
  padding: 28px 32px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.35s var(--ease) both;
  box-shadow: var(--shadow-blue-lg);
}

.wb-bg-orb {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  pointer-events: none;
  animation: orb-drift 12s ease-in-out infinite;
}

.wb-orb-1 {
  width: 240px; height: 240px;
  top: -80px; right: -60px;
  animation-delay: 0s;
}

.wb-orb-2 {
  width: 160px; height: 160px;
  bottom: -50px; right: 180px;
  animation-delay: -5s;
  animation-duration: 15s;
}

.wb-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
  gap: 24px;
}

.wb-greeting {
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.3px;
  margin-bottom: 6px;
}

.wb-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1.15;
  margin-bottom: 6px;
}

.wb-subtitle {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.5;
  max-width: 440px;
  margin-bottom: 18px;
}

.wb-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.wb-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 99px;
  font-size: 0.76rem;
  font-weight: 600;
  color: #fff;
  backdrop-filter: blur(4px);
  transition: background var(--dur-fast);
  cursor: default;
}

.wb-chip:hover { background: rgba(255,255,255,0.22); }

.wb-illustration {
  font-size: 5rem;
  opacity: 0.6;
  flex-shrink: 0;
  animation: float 4s ease-in-out infinite;
  user-select: none;
}

/* ════════════════════════════════════════════════════════════════
   STAT CARDS
   ════════════════════════════════════════════════════════════════ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: 20px 20px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.4s var(--ease) both;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  transition: height var(--dur) var(--ease);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-card:hover::after { height: 4px; }

.stat-blue::after   { background: linear-gradient(90deg, var(--blue-500), var(--cyan)); }
.stat-green::after  { background: linear-gradient(90deg, var(--green), #34d399); }
.stat-purple::after { background: linear-gradient(90deg, var(--violet), #a78bfa); }
.stat-orange::after { background: linear-gradient(90deg, var(--orange), #fbbf24); }

.stat-icon-wrap {
  width: 46px; height: 46px;
  border-radius: var(--r);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
  transition: transform var(--dur) var(--ease-spring);
}

.stat-card:hover .stat-icon-wrap { transform: scale(1.08) rotate(-5deg); }

.stat-blue   .stat-icon-wrap { background: var(--blue-50); }
.stat-green  .stat-icon-wrap { background: var(--green-bg); }
.stat-purple .stat-icon-wrap { background: var(--violet-bg); }
.stat-orange .stat-icon-wrap { background: var(--orange-bg); }

.stat-info { flex: 1; min-width: 0; }

.stat-value {
  display: block;
  font-size: 1.7rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.8px;
  line-height: 1.05;
  animation: countUp 0.4s var(--ease) both;
}

.stat-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 3px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-delta {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 99px;
  margin-top: 6px;
}

.stat-delta.up   { background: var(--green-bg);  color: #059669; }
.stat-delta.flat { background: var(--amber-bg);  color: #d97706; }
.stat-delta.na   { background: var(--surface-alt); color: var(--text-muted); }

/* Mini ring inside stat card (CGPA + Attendance) */
.stat-ring-wrap {
  flex-shrink: 0;
  opacity: 0.85;
}

.stat-ring { width: 50px; height: 50px; transform: rotate(-90deg); }

.sr-bg   { fill: none; stroke: var(--border); stroke-width: 6; }
.sr-fill { fill: none; stroke-width: 6; stroke-linecap: round; transition: stroke-dasharray 0.8s var(--ease); }
.sr-blue  { stroke: var(--blue-500); }
.sr-green { stroke: var(--green); }

/* ════════════════════════════════════════════════════════════════
   DASHBOARD GRID
   ════════════════════════════════════════════════════════════════ */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.dash-list { min-height: 80px; }

.dash-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.84rem;
  animation: slideInRight 0.25s var(--ease) both;
}

.dash-list-item:last-child { border-bottom: none; }

.dash-sub-name {
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dash-bar-wrap {
  flex: 1;
  height: 4px;
  background: var(--surface-alt);
  border-radius: 99px;
  overflow: hidden;
}

.dash-bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.6s var(--ease);
}

.dash-pct {
  font-size: 0.74rem;
  font-weight: 700;
  width: 38px;
  text-align: right;
  flex-shrink: 0;
}

/* Quick widgets */
.quick-calc { padding: 0; }

.quick-result {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  font-weight: 600;
  display: none;
  animation: scaleIn 0.2s var(--ease-spring);
}

.quick-result.show { display: block; }
.quick-result.safe     { background: var(--green-bg); color: #059669; }
.quick-result.warning  { background: var(--amber-bg); color: #d97706; }
.quick-result.critical { background: var(--red-bg);   color: var(--red); }

.quick-sgpa-row { display: flex; gap: 8px; margin-bottom: 6px; }
.quick-sgpa-row input { flex: 1; }

/* ════════════════════════════════════════════════════════════════
   CARDS
   ════════════════════════════════════════════════════════════════ */
.card {
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: 22px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.card:hover { box-shadow: var(--shadow-md); border-color: #d1dae8; }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  gap: 12px;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.15px;
}

.card-action-btn {
  background: none;
  border: none;
  color: var(--blue-600);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font);
  padding: 5px 10px;
  border-radius: var(--r-xs);
  transition: background var(--dur-fast);
}

.card-action-btn:hover { background: var(--blue-50); }

/* ════════════════════════════════════════════════════════════════
   TAB NAV
   ════════════════════════════════════════════════════════════════ */
.tab-nav {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--surface);
  border-radius: var(--r);
  padding: 5px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  flex-wrap: wrap;
}

.tab-btn {
  padding: 8px 18px;
  border: none;
  background: transparent;
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.tab-btn:hover { color: var(--text-primary); background: var(--surface-alt); }

.tab-btn.active {
  background: var(--blue-600);
  color: #fff;
  box-shadow: 0 2px 8px rgba(37,99,235,0.3);
}

.tab-content, .attend-tab-content { display: none; animation: fadeInUp 0.22s var(--ease) both; }
.tab-content.active, .attend-tab-content.active { display: block; }

/* ════════════════════════════════════════════════════════════════
   FORMS
   ════════════════════════════════════════════════════════════════ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full-width { grid-column: 1 / -1; }

label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.15px;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="tel"],
input[type="url"],
select,
textarea {
  padding: 9px 13px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.875rem;
  color: var(--text-primary);
  background: var(--surface-alt);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast), background var(--dur-fast);
  outline: none;
  width: 100%;
}

input::placeholder, textarea::placeholder { color: var(--text-faint); font-size: 0.82rem; }

input:focus, select:focus, textarea:focus {
  border-color: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(96,165,250,0.18);
  background: var(--surface);
}

textarea { resize: vertical; line-height: 1.55; }

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='7' fill='none'%3E%3Cpath d='M1 1l4.5 4.5L10 1' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
  cursor: pointer;
}

.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

/* ════════════════════════════════════════════════════════════════
   BUTTONS
   ════════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.855rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--dur-fast) var(--ease);
  letter-spacing: 0.15px;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity var(--dur-fast);
}

.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--blue-600);
  color: #fff;
  box-shadow: 0 1px 4px rgba(37,99,235,0.25), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn-primary:hover {
  background: var(--blue-700);
  box-shadow: var(--shadow-blue);
  transform: translateY(-1px);
}

.btn-outline {
  background: var(--surface);
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  box-shadow: var(--shadow-xs);
}

.btn-outline:hover {
  border-color: var(--blue-400);
  color: var(--blue-600);
  background: var(--blue-50);
}

.btn-danger {
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid #fca5a5;
}

.btn-danger:hover { background: var(--red); color: #fff; border-color: var(--red); }

.btn-sm  { padding: 5px 11px; font-size: 0.75rem; border-radius: var(--r-xs); }
.btn-lg  { padding: 12px 28px; font-size: 0.92rem; border-radius: var(--r-sm); }

.remove-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: var(--r-xs);
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 700;
  transition: all var(--dur-fast);
  flex-shrink: 0;
}

.remove-btn:hover { background: var(--red-bg); color: var(--red); border-color: #fca5a5; }

.link-btn {
  background: none;
  border: none;
  color: var(--blue-600);
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font);
  padding: 0;
  transition: color var(--dur-fast);
}

.link-btn:hover { color: var(--blue-700); text-decoration: underline; }

/* ════════════════════════════════════════════════════════════════
   ACADEMIC SUBJECT ROWS
   ════════════════════════════════════════════════════════════════ */
.subject-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  animation: fadeInUp 0.18s var(--ease) both;
}

.subject-row:last-child { border-bottom: none; }
.subject-row input { flex: 1; }

.table-header-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 28px;
  gap: 10px;
  padding: 0 0 8px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2px;
}

/* ════════════════════════════════════════════════════════════════
   RESULT CARDS
   ════════════════════════════════════════════════════════════════ */
.result-card {
  border-radius: var(--r);
  padding: 18px 22px;
  margin-top: 18px;
  animation: scaleIn 0.25s var(--ease-spring) both;
  border: 1.5px solid;
  background: var(--blue-50);
  border-color: var(--blue-200);
}

.result-card.hidden { display: none; }
.result-card.success { background: var(--green-bg); border-color: #6ee7b7; }
.result-card.warning { background: var(--amber-bg); border-color: #fcd34d; }
.result-card.danger  { background: var(--red-bg);   border-color: #fca5a5; }

.result-main  { font-size: 2rem; font-weight: 900; letter-spacing: -0.8px; line-height: 1; margin-bottom: 4px; }
.result-label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 14px; }

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.result-item {
  background: rgba(255,255,255,0.65);
  border-radius: var(--r-sm);
  padding: 10px 14px;
  backdrop-filter: blur(4px);
}

.result-item-value { font-size: 1.2rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.3px; }
.result-item-label { font-size: 0.67rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 2px; }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.73rem;
  font-weight: 700;
}

.badge-safe     { background: var(--green-bg); color: #059669; }
.badge-warning  { background: var(--amber-bg); color: #d97706; }
.badge-critical { background: var(--red-bg);   color: var(--red); }

/* ════════════════════════════════════════════════════════════════
   ATTENDANCE TRACKER
   ════════════════════════════════════════════════════════════════ */
.add-subject-form {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  padding: 14px 16px;
  background: var(--surface-alt);
  border-radius: var(--r);
  border: 1px solid var(--border);
}

.subject-input {
  flex: 1;
  padding: 9px 13px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.875rem;
  outline: none;
  background: var(--surface);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}

.subject-input:focus {
  border-color: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(96,165,250,0.18);
}

.subjects-count-badge {
  background: var(--blue-50);
  color: var(--blue-700);
  border: 1px solid var(--blue-200);
  border-radius: 99px;
  font-size: 0.73rem;
  font-weight: 700;
  padding: 2px 10px;
}

.tracker-list { display: flex; flex-direction: column; gap: 12px; }

.tracker-subject-card {
  background: var(--surface-alt);
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  padding: 16px 18px 14px;
  transition: border-color var(--dur), box-shadow var(--dur);
  animation: fadeInUp 0.22s var(--ease) both;
  position: relative;
  overflow: hidden;
}

.tracker-subject-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-sm);
}

/* Left color accent */
.tracker-subject-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 4px;
  border-radius: var(--r-lg) 0 0 var(--r-lg);
  transition: all var(--dur);
}

.tracker-subject-card.pct-safe::before     { background: linear-gradient(180deg, var(--green), #34d399); }
.tracker-subject-card.pct-warning::before  { background: linear-gradient(180deg, var(--amber), #fbbf24); }
.tracker-subject-card.pct-critical::before { background: linear-gradient(180deg, var(--red), #f87171); }

.tracker-subject-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-left: 6px;
}

.tracker-subject-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.tracker-stats {
  display: flex;
  gap: 0;
  margin-bottom: 14px;
  background: var(--surface);
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  padding-left: 6px;
}

.tracker-stat {
  text-align: center;
  flex: 1;
  padding: 10px 8px;
  border-right: 1px solid var(--border);
}

.tracker-stat:last-child { border-right: none; }

.tracker-stat-value {
  display: block;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.3px;
  line-height: 1.1;
}

.tracker-stat-label {
  font-size: 0.62rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.tracker-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 6px;
}

/* Grouped label + pair row */
.tracker-btn-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tba-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  width: 48px;
  flex-shrink: 0;
}

.tba-pair {
  display: flex;
  gap: 6px;
  flex: 1;
}

.btn-present, .btn-absent {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
}

.btn-present {
  background: var(--green-bg);
  color: #059669;
  border: 1.5px solid #6ee7b7;
}

.btn-present:hover:not(:disabled) {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16,185,129,0.3);
}

.btn-absent {
  background: var(--red-bg);
  color: var(--red);
  border: 1.5px solid #fca5a5;
}

.btn-absent:hover:not(:disabled) {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239,68,68,0.3);
}

/* Undo buttons — match their sibling's colour at lower intensity */
.btn-undo-present,
.btn-undo-absent {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  border: 1.5px dashed;
}

.btn-undo-present {
  background: transparent;
  color: #059669;
  border-color: #6ee7b7;
}

.btn-undo-present:hover:not(:disabled) {
  background: var(--green-bg);
  border-style: solid;
}

.btn-undo-absent {
  background: transparent;
  color: var(--red);
  border-color: #fca5a5;
}

.btn-undo-absent:hover:not(:disabled) {
  background: var(--red-bg);
  border-style: solid;
}

/* Disabled state for undo buttons */
.btn-undo-present:disabled,
.btn-undo-absent:disabled {
  opacity: 0.32;
  cursor: not-allowed;
  pointer-events: none;
}

/* Reset button — full row width */
.btn-reset-attn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 8px 14px;
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  border: 1.5px solid var(--border);
  background: var(--surface-alt);
  color: var(--text-muted);
  transition: all var(--dur-fast) var(--ease);
  letter-spacing: 0.2px;
}

.btn-reset-attn:hover {
  background: var(--amber-bg);
  color: #d97706;
  border-color: #fcd34d;
}

.tracker-delete-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-xs);
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: all var(--dur-fast);
}

.tracker-delete-btn:hover { background: var(--red-bg); color: var(--red); border-color: #fca5a5; }

.tracker-progress {
  height: 5px;
  background: var(--border);
  border-radius: 99px;
  margin-top: 12px;
  margin-left: 6px;
  overflow: hidden;
}

.tracker-progress-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.6s var(--ease);
}

/* ════════════════════════════════════════════════════════════════
   ATTENDANCE DASHBOARD
   ════════════════════════════════════════════════════════════════ */
.overall-attendance-card {
  display: flex;
  align-items: center;
  gap: 24px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan));
  border-radius: var(--r-lg);
  padding: 24px 28px;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-blue);
}

.overall-attendance-card::after {
  content: '○';
  position: absolute;
  right: -18px; top: -18px;
  font-size: 9rem;
  opacity: 0.06;
}

.oa-ring-wrap {
  flex-shrink: 0;
  position: relative;
  width: 88px; height: 88px;
}

.oa-ring-wrap svg { transform: rotate(-90deg); width: 88px; height: 88px; }
.oa-ring-bg   { fill: none; stroke: rgba(255,255,255,0.2); stroke-width: 8; }
.oa-ring-fill { fill: none; stroke: #fff; stroke-width: 8; stroke-linecap: round; transition: stroke-dasharray 0.8s var(--ease); }

.oa-ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  font-weight: 800;
}

.oa-info h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 5px; }
.oa-info p  { font-size: 0.84rem; opacity: 0.82; }

.subject-bar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  animation: slideInRight 0.25s var(--ease) both;
}

.subject-bar-name {
  width: 150px;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.subject-bar-track {
  flex: 1;
  height: 7px;
  background: var(--surface-alt);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.subject-bar-fill { height: 100%; border-radius: 99px; transition: width 0.6s var(--ease); }
.subject-bar-pct  { width: 44px; font-size: 0.78rem; font-weight: 700; text-align: right; flex-shrink: 0; }

/* ════════════════════════════════════════════════════════════════
   HISTORY
   ════════════════════════════════════════════════════════════════ */
.history-list { display: flex; flex-direction: column; gap: 5px; max-height: 480px; overflow-y: auto; }

.history-group-header {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 10px 0 4px;
  border-bottom: 1px solid var(--border);
  margin-top: 10px;
}

.history-group-header:first-child { margin-top: 0; }

.history-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border-radius: var(--r-sm);
  font-size: 0.84rem;
  transition: background var(--dur-fast);
}

.history-item:hover { background: var(--surface-alt); }

.history-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.dot-present { background: var(--green); box-shadow: 0 0 6px rgba(16,185,129,0.5); }
.dot-absent  { background: var(--red);   box-shadow: 0 0 6px rgba(239,68,68,0.5); }

.history-subject { font-weight: 600; color: var(--text-primary); }
.history-status  { color: var(--text-muted); font-size: 0.8rem; }
.history-time    { margin-left: auto; font-size: 0.72rem; color: var(--text-muted); }

/* ════════════════════════════════════════════════════════════════
   RESOURCE MANAGER
   ════════════════════════════════════════════════════════════════ */
.resource-toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: center;
}

.search-wrap { flex: 1; position: relative; }

.search-icon {
  position: absolute;
  left: 13px; top: 50%;
  transform: translateY(-50%);
  font-size: 0.85rem;
  pointer-events: none;
  opacity: 0.45;
}

.search-wrap input { padding: 9px 14px 9px 38px; }

.category-filter { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 20px; }

.cat-btn {
  padding: 5px 13px;
  border: 1.5px solid var(--border);
  border-radius: 99px;
  background: var(--surface);
  font-family: var(--font);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--dur-fast);
  color: var(--text-secondary);
  box-shadow: var(--shadow-xs);
}

.cat-btn:hover { border-color: var(--blue-400); color: var(--blue-600); background: var(--blue-50); }
.cat-btn.active { background: var(--blue-600); border-color: var(--blue-600); color: #fff; box-shadow: var(--shadow-blue); }

.resources-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px,1fr)); gap: 14px; }

.resource-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all var(--dur) var(--ease);
  animation: fadeInUp 0.22s var(--ease) both;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

.resource-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  transition: height var(--dur);
}

.resource-card:hover { border-color: var(--blue-200); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.resource-card:hover::before { height: 4px; }

.cat-LinkedIn::before  { background: linear-gradient(90deg,#0077b5,#00a0dc); }
.cat-GitHub::before    { background: linear-gradient(90deg,#24292e,#586069); }
.cat-LeetCode::before  { background: linear-gradient(90deg,#ff8c00,#ffa500); }
.cat-Notes::before     { background: linear-gradient(90deg,var(--blue-600),var(--cyan)); }
.cat-PDFs::before      { background: linear-gradient(90deg,var(--red),#f87171); }
.cat-YouTube::before   { background: linear-gradient(90deg,#ff0000,#ff5a5a); }
.cat-Custom::before    { background: linear-gradient(90deg,var(--violet),#a78bfa); }

.resource-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.resource-cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 700;
}

.cat-LinkedIn  .resource-cat-badge { background: #e8f4fd; color: #0077b5; }
.cat-GitHub    .resource-cat-badge { background: #f6f8fa; color: #24292e; }
.cat-LeetCode  .resource-cat-badge { background: #fff3e0; color: #e65100; }
.cat-Notes     .resource-cat-badge { background: var(--blue-50); color: var(--blue-700); }
.cat-PDFs      .resource-cat-badge { background: var(--red-bg); color: var(--red); }
.cat-YouTube   .resource-cat-badge { background: #fff0f0; color: #cc0000; }
.cat-Custom    .resource-cat-badge { background: var(--violet-bg); color: var(--violet); }

.resource-actions { display: flex; gap: 5px; }

.resource-icon-btn {
  background: var(--surface-alt);
  border: 1px solid transparent;
  border-radius: var(--r-xs);
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 0.75rem;
  transition: all var(--dur-fast);
}

.resource-icon-btn:hover { background: var(--blue-50); border-color: var(--blue-200); }

.resource-title { font-size: 0.93rem; font-weight: 700; color: var(--text-primary); word-break: break-word; line-height: 1.35; }
.resource-notes { font-size: 0.78rem; color: var(--text-muted); word-break: break-word; }

.resource-url-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  background: var(--blue-50);
  color: var(--blue-600);
  border: 1px solid var(--blue-200);
  border-radius: var(--r-sm);
  font-size: 0.77rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font);
  transition: all var(--dur-fast);
  width: fit-content;
  margin-top: auto;
}

.resource-url-btn:hover { background: var(--blue-600); color: #fff; border-color: var(--blue-600); box-shadow: var(--shadow-blue); }

/* ════════════════════════════════════════════════════════════════
   RESUME COMPLETENESS SCORE CARD
   ════════════════════════════════════════════════════════════════ */
.resume-score-card {
  background: linear-gradient(135deg, #0f172a 0%, var(--blue-900) 100%);
  border-radius: var(--r-lg);
  padding: 18px 22px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.3s var(--ease) both;
}

.resume-score-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(37,99,235,0.25), transparent 60%);
  pointer-events: none;
}

.rs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.rs-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rs-icon { font-size: 1rem; }

.rs-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  letter-spacing: -0.1px;
}

.rs-pct {
  font-size: 1.5rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.5px;
  transition: all var(--dur);
}

.rs-bar-wrap {
  position: relative;
  z-index: 1;
  margin-bottom: 12px;
}

.rs-bar {
  height: 8px;
  background: rgba(255,255,255,0.12);
  border-radius: 99px;
  overflow: hidden;
}

.rs-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--blue-400), var(--cyan));
  transition: width 0.7s var(--ease), background 0.4s;
  position: relative;
}

/* Shimmer on rs-fill */
.rs-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

.rs-fill.rs-danger  { background: linear-gradient(90deg, var(--red), #f87171); }
.rs-fill.rs-amber   { background: linear-gradient(90deg, var(--amber), #fbbf24); }
.rs-fill.rs-good    { background: linear-gradient(90deg, var(--blue-400), var(--cyan)); }
.rs-fill.rs-perfect { background: linear-gradient(90deg, var(--green), #34d399); }

.rs-tips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  position: relative;
  z-index: 1;
}

.rs-tip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(255,255,255,0.65);
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  padding: 3px 10px;
  border: 1px solid rgba(255,255,255,0.12);
}

/* ════════════════════════════════════════════════════════════════
   RESUME BUILDER LAYOUT
   ════════════════════════════════════════════════════════════════ */
.resume-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: start;
}

.resume-form-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: calc(100vh - var(--header-h) - 130px);
  overflow-y: auto;
  padding-right: 2px;
}

.resume-form-panel::-webkit-scrollbar { width: 4px; }

.resume-card { padding: 18px 20px; }

.resume-entry {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px 16px;
  margin-bottom: 10px;
  animation: fadeInUp 0.18s var(--ease) both;
}

.resume-entry:last-child { margin-bottom: 0; }

.resume-entry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.entry-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

/* Resume Preview Panel */
.resume-preview-panel {
  position: sticky;
  top: calc(var(--header-h) + 28px);
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.resume-preview {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 30px 34px;
  box-shadow: var(--shadow-lg);
  max-height: calc(100vh - var(--header-h) - 90px);
  overflow-y: auto;
  font-size: 0.8rem;
  line-height: 1.55;
}

.rp-header    { margin-bottom: 12px; text-align: center; }
.rp-name      { font-size: 1.45rem; font-weight: 800; color: #0f172a; letter-spacing: -0.4px; margin-bottom: 8px; }
.rp-contact   { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 10px; font-size: 0.73rem; color: #475569; }
.rp-divider   { border: none; border-top: 1.5px solid #0f172a; margin: 10px 0; }
.rp-section   { margin-bottom: 12px; }
.rp-section-title { font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 1.2px; color: #1e3a8a; border-bottom: 1px solid #e2e8f0; padding-bottom: 4px; margin-bottom: 9px; }
.rp-edu-row   { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.rp-sub       { color: #475569; }
.rp-right     { font-size: 0.72rem; color: #475569; white-space: nowrap; flex-shrink: 0; }
.rp-skill-row { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 5px; }
.rp-skill-badge { background: #eff6ff; color: #1e40af; padding: 2px 8px; border-radius: 99px; font-size: 0.7rem; font-weight: 600; }
.rp-skill-label { font-size: 0.72rem; font-weight: 700; color: #0f172a; margin-bottom: 4px; margin-top: 7px; display: block; }
.rp-project   { margin-bottom: 10px; }
.rp-project-name { font-weight: 700; font-size: 0.82rem; }
.rp-project-tech { font-size: 0.71rem; color: #7c3aed; font-weight: 600; margin-top: 2px; }
.rp-project-desc { font-size: 0.76rem; color: #475569; margin-top: 3px; }
.rp-ach-item  { font-size: 0.78rem; color: #0f172a; margin-bottom: 4px; display: flex; gap: 6px; }
.rp-ach-type  { font-weight: 700; color: #1e3a8a; flex-shrink: 0; }

/* ════════════════════════════════════════════════════════════════
   MODALS
   ════════════════════════════════════════════════════════════════ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.6);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
  padding: 20px;
}

.modal-overlay.open { display: flex; animation: fadeIn 0.2s var(--ease); }

.modal {
  background: var(--surface);
  border-radius: var(--r-xl);
  padding: 28px;
  width: 100%;
  max-width: 490px;
  box-shadow: 0 24px 80px rgba(15,23,42,0.25);
  animation: scaleIn 0.25s var(--ease-spring);
  border: 1px solid var(--border);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 { font-size: 1.05rem; font-weight: 800; color: var(--text-primary); }

.modal-close {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: all var(--dur-fast);
}

.modal-close:hover { background: var(--red-bg); color: var(--red); border-color: #fca5a5; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ════════════════════════════════════════════════════════════════
   TOAST
   ════════════════════════════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  padding: 11px 18px;
  background: var(--text-primary);
  color: #fff;
  border-radius: var(--r);
  font-size: 0.84rem;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transform: translateY(10px) scale(0.96);
  transition: all 0.25s var(--ease-spring);
  pointer-events: none;
  max-width: 320px;
  box-shadow: var(--shadow-lg);
}

.toast.show { opacity: 1; transform: translateY(0) scale(1); }
.toast.success { background: #059669; }
.toast.error   { background: var(--red); }

/* ════════════════════════════════════════════════════════════════
   EMPTY STATES
   ════════════════════════════════════════════════════════════════ */
.empty-msg {
  color: var(--text-muted);
  font-size: 0.86rem;
  text-align: center;
  padding: 28px 16px;
  line-height: 1.8;
}

.empty-icon { display: block; font-size: 2rem; margin-bottom: 8px; opacity: 0.4; }

/* ════════════════════════════════════════════════════════════════
   HAMBURGER (Mobile)
   ════════════════════════════════════════════════════════════════ */
.hamburger {
  display: none;
  position: fixed;
  top: 14px; left: 14px;
  z-index: 1100;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  width: 38px; height: 38px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: all var(--dur-fast);
}

.hamburger span { display: block; width: 18px; height: 2px; background: var(--text-secondary); border-radius: 2px; transition: all var(--dur); }
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(15,23,42,0.45); z-index: 999; backdrop-filter: blur(2px); }

/* ════════════════════════════════════════════════════════════════
   PRINT
   ════════════════════════════════════════════════════════════════ */
@media print {
  body * { visibility: hidden; }
  #resume-preview, #resume-preview * { visibility: visible; }
  #resume-preview {
    position: fixed; inset: 0;
    width: 100%; padding: 30px 36px;
    background: #fff; box-shadow: none;
    border: none; border-radius: 0;
    max-height: none; overflow: visible;
    font-size: 0.82rem;
  }
}

/* ════════════════════════════════════════════════════════════════
   RESPONSIVE — TABLET ≤ 1100px
   ════════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .resume-layout { grid-template-columns: 1fr; }
  .resume-preview-panel { position: static; }
  .resume-form-panel { max-height: none; overflow-y: visible; }
  .wb-illustration { font-size: 3.5rem; }
}

/* ════════════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE ≤ 768px
   ════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  :root { --sidebar-w: 264px; }

  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .hamburger { display: flex; }
  .main-content { margin-left: 0; }

  .top-header {
    padding: 10px 14px 10px 60px;
    min-height: var(--header-h);
    height: auto;
    flex-wrap: wrap;
    gap: 6px;
  }

  .current-date { display: none; }

  .welcome-banner { padding: 20px; }
  .wb-title { font-size: 1.25rem; }
  .wb-illustration { display: none; }

  .module { padding: 16px 14px 30px; }
  .module-title { font-size: 1.3rem; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-value { font-size: 1.35rem; }
  .stat-ring-wrap { display: none; }

  .form-grid { grid-template-columns: 1fr; }
  .table-header-row { display: none; }
  .subject-row { flex-wrap: wrap; }

  .tab-nav { padding: 4px; gap: 3px; }
  .tab-btn { padding: 7px 12px; font-size: 0.77rem; }

  .resource-toolbar { flex-direction: column; }
  .add-subject-form { flex-direction: column; }

  .tracker-stats { gap: 0; }
  .tracker-actions { flex-wrap: wrap; }

  .overall-attendance-card { flex-direction: column; text-align: center; gap: 16px; }
  .resume-preview { padding: 20px; }
  .rp-name { font-size: 1.1rem; }
  .rp-contact { flex-direction: column; align-items: center; }
  .modal { padding: 20px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .resources-grid { grid-template-columns: 1fr; }
  .module-title { font-size: 1.15rem; }
  .dh-button { font-size: 0.73rem; }
  .wb-chips { display: none; }
  .dev-email { display: none; }
}