/* ═══════════════════════════════════════════════════════
   CYBERTRUCK DARK NEUMORPHIC DESIGN SYSTEM
   Tesla-inspired • Electric Blue • Dark Surfaces Only
   ═══════════════════════════════════════════════════════ */


:root {
  color-scheme: dark !important;
  /* ── Core Palette ── */
  --bg-page:     #0D0F14;
  --bg-card:     #15181E;
  --bg-card-alt: #0B0D11;
  --bg-surface:  #0B0D11;

  /* Card gradient */
  --card-gradient: linear-gradient(145deg, #15181E, #0D0F14);

  /* Electric Accent */
  --accent:       #1E90FF;
  --accent-dark:  #0070E0;
  --accent-glow:  rgba(30,144,255,0.5);
  --accent-soft:  rgba(30,144,255,0.12);
  --accent-gradient: linear-gradient(145deg, #1E90FF, #0070E0);

  /* Text */
  --text-1: #FFFFFF;
  --text-2: #E0E2E8;
  --text-3: #8A8D96;
  --text-4: #5A5D66;

  /* Borders */
  --border-subtle: 1px solid rgba(255,255,255,0.06);
  --border-color: rgba(255,255,255,0.06);

  /* Status */
  --success:      #00C864;
  --success-bg:   rgba(0,200,100,0.12);
  --success-border: rgba(0,200,100,0.3);
  --danger:       #FF3C3C;
  --danger-bg:    rgba(255,60,60,0.12);
  --danger-border: rgba(255,60,60,0.3);
  --warning:      #FFB400;
  --warning-bg:   rgba(255,180,0,0.12);
  --warning-border: rgba(255,180,0,0.3);

  /* Neumorphic Shadows */
  --neu-shadow: 4px 4px 12px rgba(0,0,0,0.6), -2px -2px 6px rgba(255,255,255,0.03);
  --neu-shadow-lg: 6px 6px 20px rgba(0,0,0,0.7), -3px -3px 8px rgba(255,255,255,0.03);
  --neu-shadow-inset: inset 2px 2px 6px rgba(0,0,0,0.5), inset -1px -1px 3px rgba(255,255,255,0.03);

  /* Geometry */
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 200ms ease;
  --transition-spring: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Glass compat (for existing HTML class references) */
  --glass-border: rgba(255,255,255,0.06);
  --glass-1: var(--card-gradient);
  --glass-2: linear-gradient(145deg, #22242B, #1A1C22);
  --glass-3: linear-gradient(145deg, #282A32, #1E2028);
  --glass-shadow: var(--neu-shadow);

  /* Legacy compat */
  --primary: var(--accent);
  --primary-light: var(--accent);
  --primary-gradient: var(--accent-gradient);
  --primary-glow: var(--accent-glow);
}


/* ═══════════════════════════
   RESET & BASE
   ═══════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  margin: 0; padding: 0;
  width: 100%; height: 100%;
  background: var(--bg-page) !important;
  color: var(--text-1) !important;
  font-family: 'Inter', -apple-system, sans-serif;
  overflow: hidden;
  user-select: none;
  touch-action: manipulation;
  color-scheme: dark !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  -webkit-user-select: none;
  user-select: none;
  touch-action: pan-y; /* smooth vertical scrolling only */
}

/* Re-enable selection on actual input fields */
input, textarea {
  -webkit-user-select: auto;
  user-select: auto;
}

/* Headers use same Inter font but heavier weight */
h1, h2, h3, .modal-title, .splash-title, .role-hero-title,
.home-greeting-name, .rollcall-roll-num {
  font-family: 'Inter', system-ui, sans-serif;
}

/* ── Subtle ambient glow ── */
body::before {
  content: '';
  position: fixed; inset: -50%; z-index: -1;
  background:
    radial-gradient(circle at 30% 20%, rgba(30,144,255,0.06) 0%, transparent 40%),
    radial-gradient(circle at 70% 80%, rgba(30,144,255,0.04) 0%, transparent 40%);
  filter: blur(100px);
  pointer-events: none;
  animation: ambientPulse 20s infinite alternate ease-in-out;
}

@keyframes ambientPulse {
  0%   { opacity: 0.6; }
  100% { opacity: 1; }
}

/* Remove the grid dot pattern — pure dark surfaces */
body::after { display: none; }


/* ═══════════════════════════
   LAYOUT
   ═══════════════════════════ */
#app {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  height: 100vh; height: 100dvh;
  margin: 0 auto;
  background: var(--bg-page);
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Desktop bezel */
@media (min-width: 600px) {
  #app {
    max-width: 440px;
    height: 90vh;
    border-radius: 32px;
    box-shadow:
      8px 8px 24px rgba(0,0,0,0.8),
      -4px -4px 12px rgba(255,255,255,0.02),
      0 0 0 1px rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.06);
    overflow: hidden;
    background: var(--bg-page);
  }
}

.screen {
  display: none; flex: 1; flex-direction: column;
  height: 100%;
  animation: screenSlideIn 0.4s ease;
  position: relative;
  overflow: hidden;
}
.screen.active { display: flex; }

@keyframes screenSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.screen-scroll {
  flex: 1; overflow-y: auto;
  padding: 16px 16px 32px;
  -webkit-overflow-scrolling: touch;
}


/* ═══════════════════════════
   CARD SYSTEM (Neumorphic)
   ═══════════════════════════ */
.glass-card {
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--neu-shadow);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

/* Subtle top-left sheen */
.glass-card::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 50%; bottom: 50%;
  background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, transparent 100%);
  pointer-events: none; border-radius: var(--radius-lg) 0 0 0;
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--neu-shadow-lg);
  border-color: rgba(255,255,255,0.12);
}


/* ═══════════════════════════
   TOPBAR
   ═══════════════════════════ */
.topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 16px;
  padding-top: max(16px, env(safe-area-inset-top));
  background: rgba(17,19,24,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  position: sticky; top: 0; z-index: 100; flex-shrink: 0;
}
.has-notch .topbar {
  padding-top: max(32px, env(safe-area-inset-top));
}

.topbar-back {
  width: 48px; height: 48px; /* Fat finger optimized */
  display: flex; align-items: center; justify-content: center;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  box-shadow: var(--neu-shadow);
  cursor: pointer; transition: var(--transition);
  color: var(--text-1); font-size: 22px; font-weight: 300;
}
.topbar-back:hover { background: var(--glass-2); transform: translateX(-2px); }
.topbar-back:active { transform: scale(0.94); }

.topbar-title {
  flex: 1; font-family: 'Inter', system-ui, sans-serif;
  font-size: 18px; font-weight: 600; color: var(--text-1);
  letter-spacing: -0.3px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.topbar-action {
  width: 48px; height: 48px; /* Fat finger */
  display: flex; align-items: center; justify-content: center;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  box-shadow: var(--neu-shadow);
  cursor: pointer; transition: var(--transition);
  color: var(--text-3); font-size: 20px;
}
.topbar-action:hover { color: var(--accent); }


/* ═══════════════════════════
   BUTTONS
   ═══════════════════════════ */
.btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 0 24px; height: 52px;
  border-radius: var(--radius-lg);
  font-family: inherit; font-size: 15px; font-weight: 600;
  border: none; cursor: pointer;
  transition: var(--transition);
  position: relative; overflow: hidden;
  user-select: none; -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.94); }
.btn:disabled { opacity: 0.4; filter: grayscale(0.6); pointer-events: none; }

/* Shimmer */
.btn::after {
  content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
  transform: skewX(-20deg); transition: 0.5s;
}
.btn:hover::after { left: 150%; }

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: var(--neu-shadow);
}
.btn-primary:active {
  box-shadow: 0 0 24px var(--accent-glow) !important;
}

.btn-success {
  background: linear-gradient(145deg, #00C864, #00A050);
  color: #fff;
  box-shadow: 0 0 16px rgba(0,200,100,0.4);
}

.btn-danger {
  background: linear-gradient(145deg, #FF3C3C, #CC2020);
  color: #fff;
  box-shadow: 0 0 16px rgba(255,60,60,0.4);
}

.btn-glass {
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  color: var(--text-1);
  box-shadow: var(--neu-shadow);
}
.btn-glass:hover { background: var(--glass-2); }

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.1);
  color: var(--text-3);
}
.btn-outline:hover { border-color: var(--accent); color: var(--text-1); background: var(--accent-soft); }

.btn-sm { height: 40px; font-size: 13px; padding: 0 16px; border-radius: var(--radius-sm); }
.btn-lg { height: 56px; font-size: 16px; border-radius: var(--radius-xl); }
.btn-full { width: 100%; }


/* ═══════════════════════════
   PRIMARY ACTION BUTTON (Circle)
   ═══════════════════════════ */
.action-circle {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--accent-gradient);
  box-shadow: 0 0 16px var(--accent-glow);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 22px;
  cursor: pointer; transition: var(--transition);
  border: none;
}
.action-circle:active { transform: scale(0.94); box-shadow: 0 0 24px var(--accent-glow); }


/* ═══════════════════════════
   INPUTS
   ═══════════════════════════ */
.input-group { display: flex; flex-direction: column; gap: 8px; }
.input-label {
  font-size: 12px; font-weight: 600; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.1em;
}

.input {
  height: 52px; width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0 18px;
  font-family: inherit; font-size: 15px; color: var(--text-1);
  transition: var(--transition);
  outline: none; -webkit-appearance: none;
  box-shadow: var(--neu-shadow-inset);
}
.input::placeholder { color: var(--text-4); }
.input:focus {
  border-color: var(--accent);
  box-shadow: var(--neu-shadow-inset), 0 0 0 3px var(--accent-soft);
}

textarea.input { height: auto; min-height: 100px; padding: 16px 18px; resize: none; }

select.input {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238A8D96' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 16px;
  padding-right: 48px;
}


/* ═══════════════════════════
   STATUS PILL CHIPS
   ═══════════════════════════ */
.badge {
  display: inline-flex; align-items: center;
  padding: 4px 12px; border-radius: var(--radius-full);
  font-size: 11px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
}
.badge-primary { background: var(--accent-soft); color: var(--accent); border: 1px solid rgba(30,144,255,0.3); }
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.badge-danger  { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid var(--warning-border); }


/* ═══════════════════════════
   TOAST — Kinetic Typography Style
   ═══════════════════════════ */
#toast-container {
  position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
  z-index: 11000; display: flex; flex-direction: column; align-items: center; gap: 10px;
  pointer-events: none;
}

.toast-backdrop {
  position: fixed; inset: 0; z-index: 10900;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px) saturate(1.2);
  -webkit-backdrop-filter: blur(8px) saturate(1.2);
  opacity: 0; transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}
.toast-backdrop.active { opacity: 1; pointer-events: auto; }

.toast {
  --toast-accent: #1E90FF;
  background: rgba(13, 15, 20, 0.97);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px;
  padding: 14px 20px 14px 16px;
  font-size: 13px; font-weight: 600; color: #fff;
  box-shadow:
    0 8px 32px rgba(0,0,0,0.6),
    0 0 0 1px rgba(255,255,255,0.04) inset,
    0 1px 0 rgba(255,255,255,0.06) inset;
  min-width: 200px; max-width: 320px;
  text-align: left;
  display: flex; align-items: center; gap: 12px;
  animation: toastSlideIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  position: relative;
  overflow: hidden;
  transform-origin: top center;
}

/* Colored left accent strip */
.toast::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--toast-accent);
  border-radius: 16px 0 0 16px;
  box-shadow: 0 0 12px var(--toast-accent);
}

/* Auto-dismiss progress bar */
.toast::after {
  content: '';
  position: absolute;
  bottom: 0; left: 4px; right: 0;
  height: 2px;
  background: var(--toast-accent);
  opacity: 0.5;
  border-radius: 0 0 16px 0;
  animation: toastCountdown 1.5s linear forwards;
  transform-origin: left;
}

/* Toast icon */
.toast .toast-icon {
  font-size: 20px;
  flex-shrink: 0;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  animation: toastIconPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s both;
}

/* Toast message text */
.toast .toast-msg {
  flex: 1;
  line-height: 1.4;
  letter-spacing: 0.01em;
  animation: toastTextSlide 0.4s cubic-bezier(0.22, 1, 0.36, 1) 0.08s both;
}

/* ─── Type Variants ─── */
.toast.success {
  --toast-accent: #00C864;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 20px rgba(0,200,100,0.12);
}
.toast.success .toast-icon {
  color: #00C864;
  background: rgba(0,200,100,0.12);
}

.toast.error {
  --toast-accent: #FF3C3C;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 20px rgba(255,60,60,0.12);
}
.toast.error .toast-icon {
  color: #FF3C3C;
  background: rgba(255,60,60,0.12);
}

.toast.warning {
  --toast-accent: #FFB400;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 20px rgba(255,180,0,0.12);
}
.toast.warning .toast-icon {
  color: #FFB400;
  background: rgba(255,180,0,0.12);
}

.toast.info {
  --toast-accent: #1E90FF;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 20px rgba(30,144,255,0.12);
}
.toast.info .toast-icon {
  color: #1E90FF;
  background: rgba(30,144,255,0.12);
}

/* ─── Exit ─── */
.toast.hiding {
  animation: toastSlideOut 0.35s cubic-bezier(0.55, 0, 1, 0.45) forwards;
}
.toast.hiding::after {
  animation: none;
  opacity: 0;
}

/* ─── Keyframes ─── */
@keyframes toastSlideIn {
  0%   { opacity: 0; transform: translateY(-24px) scale(0.92); filter: blur(4px); }
  60%  { opacity: 1; transform: translateY(4px) scale(1.02); filter: blur(0px); }
  80%  { transform: translateY(-2px) scale(0.99); }
  100% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0px); }
}

@keyframes toastSlideOut {
  0%   { opacity: 1; transform: translateY(0) scale(1); filter: blur(0px); }
  100% { opacity: 0; transform: translateY(-18px) scale(0.94); filter: blur(6px); }
}

@keyframes toastIconPop {
  0%   { transform: scale(0) rotate(-30deg); opacity: 0; }
  60%  { transform: scale(1.2) rotate(5deg); }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

@keyframes toastTextSlide {
  0%   { opacity: 0; transform: translateX(8px); }
  100% { opacity: 1; transform: translateX(0); }
}

@keyframes toastCountdown {
  0%   { transform: scaleX(1); }
  100% { transform: scaleX(0); }
}


/* ═══════════════════════════
   MODAL (Bottom Sheet)
   ═══════════════════════════ */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  animation: backdropIn 0.3s ease;
}
.modal-backdrop.closing { animation: backdropOut 0.3s ease forwards; }

@keyframes backdropIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes backdropOut { to { opacity: 0; } }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 0 0 env(safe-area-inset-bottom);
  width: calc(100% - 40px); max-width: 420px;
  max-height: 85vh; 
  max-height: 85dvh; 
  overflow-y: auto;
  box-shadow: var(--neu-shadow-lg);
  animation: modalCenterIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
.modal.closing { animation: modalCenterOut 0.3s ease forwards; }

@keyframes modalCenterIn { from { opacity: 0; transform: scale(0.9) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
@keyframes modalCenterOut { to { opacity: 0; transform: scale(0.9); } }

.modal-handle {
  width: 48px; height: 5px; border-radius: 3px;
  background: rgba(255,255,255,0.15);
  margin: 16px auto 8px;
}

.modal-header { padding: 12px 24px 20px; border-bottom: 1px solid var(--border-color); }
.modal-title { font-size: 20px; font-weight: 700; color: var(--text-1); letter-spacing: -0.3px; }
.modal-subtitle { font-size: 13px; color: var(--text-3); margin-top: 4px; }

.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px 24px; display: flex; gap: 12px; }

.modal-centered .modal {
  border-radius: var(--radius-xl);
  margin: 24px; width: auto; max-width: 380px;
  border: 1px solid rgba(255,255,255,0.08);
  animation: modalCenterInCentered 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes modalCenterInCentered { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
.modal-centered { align-items: center; }


/* ═══════════════════════════
   SPLASH SCREEN
   ═══════════════════════════ */
.splash-logo-wrap { position: relative; margin-bottom: 40px; }
.splash-logo-ring {
  width: 130px; height: 130px;
  border-radius: 36px;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--neu-shadow-lg), 0 0 40px var(--accent-soft);
  animation: logoFloat3D 3s cubic-bezier(0.45, 0, 0.55, 1) infinite;
  margin-top: env(safe-area-inset-top);
  perspective: 600px;
  transform-style: preserve-3d;
}
.splash-logo-ring::before {
  content: ''; position: absolute; inset: -12px;
  border-radius: 44px;
  border: 1.5px solid transparent;
  border-top-color: rgba(30,144,255,0.5);
  border-right-color: rgba(30,144,255,0.3);
  animation: ringOrbit3D 1.8s linear infinite;
  filter: drop-shadow(0 0 4px rgba(30,144,255,0.3));
}
.splash-logo-ring::after {
  content: ''; position: absolute; inset: -24px;
  border-radius: 56px;
  border: 1px solid transparent;
  border-bottom-color: rgba(30,144,255,0.4);
  border-left-color: rgba(30,144,255,0.2);
  animation: ringOrbit3D 2.4s linear infinite reverse;
  filter: drop-shadow(0 0 6px rgba(30,144,255,0.2));
}
.splash-logo-emoji { font-size: 56px; line-height: 1; }

@keyframes logoFloat3D {
  0%   { transform: translateY(0) rotateX(0deg) rotateY(0deg); }
  25%  { transform: translateY(-6px) rotateX(2deg) rotateY(-2deg); }
  50%  { transform: translateY(-10px) rotateX(0deg) rotateY(0deg); }
  75%  { transform: translateY(-6px) rotateX(-2deg) rotateY(2deg); }
  100% { transform: translateY(0) rotateX(0deg) rotateY(0deg); }
}
@keyframes ringOrbit3D {
  0%   { transform: rotate(0deg); opacity: 0.4; }
  50%  { opacity: 1; }
  100% { transform: rotate(360deg); opacity: 0.4; }
}

.splash-title {
  font-size: 32px; font-weight: 700; letter-spacing: -0.5px;
  color: var(--text-1);
  margin-bottom: 8px;
}
.splash-sub {
  font-size: 12px; color: var(--accent); font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
}

.splash-loader { margin-top: 32px; }
.splash-loading-text { font-size: 12px; color: var(--text-3); margin-top: 10px; text-align: center; letter-spacing: 0.1em; text-transform: uppercase; }
.splash-progress {
  width: 200px; height: 4px;
  background: var(--bg-card-alt);
  border-radius: 2px; overflow: hidden;
}
.splash-progress-bar {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--accent-glow);
  animation: progressLoad 2.5s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}
@keyframes progressLoad { from{width:0%} to{width:100%} }


/* ═══════════════════════════
   ROLE SELECTION
   ═══════════════════════════ */
.role-hero-title { font-size: 26px; font-weight: 700; color: #fff; margin-bottom: 8px; letter-spacing: -0.3px; }
.role-hero-sub { font-size: 14px; color: var(--text-3); }
.role-cards { display: flex; flex-direction: column; gap: 14px; padding: 0 16px; }

.role-card {
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px; cursor: pointer;
  display: flex; align-items: center; gap: 16px;
  box-shadow: var(--neu-shadow);
  transition: var(--transition);
}
.role-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--neu-shadow-lg), 0 0 20px var(--accent-soft);
  border-color: rgba(30,144,255,0.3);
}
.role-card:active { transform: scale(0.97); }

.role-icon-wrap {
  width: 56px; height: 56px; flex-shrink: 0;
  border-radius: 16px;
  background: var(--accent-soft);
  border: 1px solid rgba(30,144,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--accent);
}
.faculty-card .role-icon-wrap { background: var(--accent-soft); border-color: rgba(30,144,255,0.25); }
.incharge-card .role-icon-wrap { background: rgba(30,144,255,0.08); border-color: rgba(30,144,255,0.2); }

.role-name { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.role-desc { font-size: 13px; color: var(--text-3); line-height: 1.4; }
.role-arrow { font-size: 24px; color: var(--text-4); font-weight: 300; }


/* ═══════════════════════════
   HOME SCREEN
   ═══════════════════════════ */
.home-header { padding: 24px 20px; display: flex; align-items: center; gap: 16px; }
.home-avatar {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--accent-gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 700; color: white;
  box-shadow: 0 0 16px var(--accent-glow);
}
.home-greeting-sub { font-size: 12px; color: var(--text-3); font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; }
.home-greeting-name { font-size: 19px; font-weight: 700; color: #fff; letter-spacing: -0.3px; }

.date-pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 10px 18px;
  font-size: 14px; font-weight: 600; color: var(--text-1);
  cursor: pointer; transition: var(--transition);
  box-shadow: var(--neu-shadow);
}
.date-pill:hover { border-color: rgba(30,144,255,0.3); box-shadow: var(--neu-shadow), 0 0 10px var(--accent-soft); }

.subject-select-card { margin: 0 16px 20px; min-height: 90px; cursor: pointer; display: flex; align-items: center; }
.subject-select-card:hover { border-color: rgba(30,144,255,0.3); box-shadow: var(--neu-shadow-lg), 0 0 16px var(--accent-soft); }
.subject-selected-name { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 6px; word-break: break-word; line-height: 1.3; }
.subject-selected-meta { font-size: 12px; color: var(--text-3); word-break: break-word; }
.subject-placeholder { color: var(--text-4); font-size: 14px; word-break: break-word; }

/* Quick Actions Grid */
.quick-actions { display: grid; grid-template-columns: 1fr; gap: 12px; }

.quick-card {
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer; transition: var(--transition);
  display: flex; flex-direction: column; gap: 10px;
  box-shadow: var(--neu-shadow);
}
.quick-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--neu-shadow-lg);
  border-color: rgba(255,255,255,0.15);
}
.quick-card:active { transform: scale(0.97); }

.quick-card-icon {
  font-size: 24px;
  background: var(--accent-soft);
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 14px;
  color: var(--accent);
}
.quick-card-label { font-size: 15px; font-weight: 600; color: #fff; }
.quick-card-sub { font-size: 11px; color: var(--text-4); text-transform: uppercase; letter-spacing: 0.05em; }


/* ═══════════════════════════
   MODE SECTION TITLE (label style)
   ═══════════════════════════ */
.mode-section-title {
  font-size: 11px; font-weight: 700; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 8px;
}


/* ═══════════════════════════
   ATTENDANCE MODE
   ═══════════════════════════ */
.mode-btn {
  min-height: 68px; display: flex; align-items: center; gap: 16px;
  padding: 12px 20px; border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--card-gradient);
  cursor: pointer; transition: var(--transition);
  box-shadow: var(--neu-shadow);
}
.mode-btn:hover { transform: translateY(-2px); box-shadow: var(--neu-shadow-lg); }
.mode-btn.present:hover { border-color: var(--success); box-shadow: var(--neu-shadow), 0 0 16px rgba(0,200,100,0.3); }
.mode-btn.absent:hover  { border-color: var(--danger);  box-shadow: var(--neu-shadow), 0 0 16px rgba(255,60,60,0.3); }
.mode-btn.rollcall:hover { border-color: var(--accent); box-shadow: var(--neu-shadow), 0 0 16px var(--accent-soft); }
.mode-btn-icon { font-size: 28px; }
.mode-btn-name { font-size: 16px; font-weight: 700; color: #fff; }
.mode-btn-sub { font-size: 12px; color: var(--text-3); margin-top: 2px; }

/* Toggle (P/A) */
.pa-toggle {
  width: 96px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full); border: 1px solid var(--border-color);
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  cursor: pointer; transition: var(--transition);
  background: transparent;
}
.pa-toggle.present { background: linear-gradient(145deg, #00C864, #00A050); box-shadow: 0 0 12px rgba(0,200,100,0.4); color: #fff; border-color: transparent; }
.pa-toggle.absent  { background: linear-gradient(145deg, #FF3C3C, #CC2020); box-shadow: 0 0 12px rgba(255,60,60,0.4);  color: #fff; border-color: transparent; }
.pa-toggle:hover { transform: scale(1.04); }

/* Roll Call Buttons - Aesthetic Re-alignment */
.rollcall-btn-p, .rollcall-btn-a {
  flex: 1; 
  min-height: 58px; 
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 14px; 
  font-weight: 700; 
  color: white;
  letter-spacing: 0.08em;
  cursor: pointer; 
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  display: flex; 
  align-items: center; 
  justify-content: center;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.rollcall-btn-p { 
  background: rgba(0, 200, 100, 0.85); 
  box-shadow: 0 8px 24px rgba(0, 200, 100, 0.3); 
}
.rollcall-btn-a { 
  background: rgba(255, 60, 60, 0.85); 
  box-shadow: 0 8px 24px rgba(255, 60, 60, 0.3); 
}

.rollcall-btn-p:hover, .rollcall-btn-a:hover { 
  transform: translateY(-4px); 
  filter: brightness(1.1);
  box-shadow: 0 12px 28px rgba(255,255,255,0.1);
}
.rollcall-btn-p:active, .rollcall-btn-a:active { 
  transform: translateY(-2px) scale(0.96); 
}

.rollcall-buttons { 
  display: flex; gap: 16px; 
  padding: 16px 24px 32px; 
  padding-bottom: max(32px, env(safe-area-inset-bottom)); 
  flex-shrink: 0; 
}
.rollcall-student-card { text-align: center; padding: 32px 24px; }
.rollcall-counter { font-size: 12px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.rollcall-roll-num { font-size: 64px; font-weight: 200; color: #fff; }
.rollcall-name { font-size: 16px; font-weight: 600; color: var(--text-2); margin-top: 8px; }
.rollcall-prev-indicator { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }


/* ═══════════════════════════
   SESSION COMPLETE
   ═══════════════════════════ */
.session-complete-hero { text-align: center; padding: 40px 20px 24px; }
.session-complete-icon { font-size: 64px; margin-bottom: 16px; }
.session-complete-icon i {
  color: var(--success);
  filter: drop-shadow(0 0 16px rgba(0,200,100,0.4));
}
.session-complete-title { font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.session-complete-sub { font-size: 14px; color: var(--text-3); }

/* Stat pills (session complete) */
.stat-pills { display: flex; gap: 12px; padding: 0 16px 16px; }
.stat-pill {
  flex: 1; text-align: center; padding: 20px 10px;
  border-radius: var(--radius-lg);
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  box-shadow: var(--neu-shadow);
}
.stat-pill-val { font-size: 32px; font-weight: 200; color: #fff; }
.stat-pill-key {
  font-size: 11px; font-weight: 600; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.1em; margin-top: 4px;
}
.stat-pill.green .stat-pill-val { color: var(--success); text-shadow: 0 0 16px rgba(0,200,100,0.4); }
.stat-pill.red .stat-pill-val   { color: var(--danger);  text-shadow: 0 0 16px rgba(255,60,60,0.4); }
.stat-pill.blue .stat-pill-val  { color: var(--accent);  text-shadow: 0 0 16px var(--accent-glow); }


/* ═══════════════════════════
   SUMMARY BAR (Attendance)
   ═══════════════════════════ */
.summary-bar {
  display: flex; gap: 12px; padding: 14px 16px;
  background: rgba(17,19,24,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky; top: 0; z-index: 50;
}
.summary-stat {
  flex: 1; text-align: center; padding: 16px 8px;
  border-radius: var(--radius-lg);
  background: #14161B;
  border: 1px solid rgba(255,255,255,0.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  transition: var(--transition);
}
.summary-num { font-size: 36px; font-weight: 200; margin-bottom: 6px; color: #fff; line-height: 1; }
.summary-lbl { 
  font-size: 11px; font-weight: 800; text-transform: uppercase; 
  letter-spacing: 0.12em; color: var(--text-3);
}

.summary-stat.present { border-color: rgba(0,200,100,0.15); box-shadow: 0 0 15px rgba(0,200,100,0.03), 0 4px 12px rgba(0,0,0,0.4); }
.summary-stat.absent { border-color: rgba(255,60,60,0.15); box-shadow: 0 0 15px rgba(255,60,60,0.03), 0 4px 12px rgba(0,0,0,0.4); }
.summary-stat.total { border-color: rgba(30,144,255,0.15); box-shadow: 0 0 15px rgba(30,144,255,0.03), 0 4px 12px rgba(0,0,0,0.4); }

.summary-stat.present .summary-num { color: var(--success); }
.summary-stat.absent .summary-num { color: var(--danger); }
.summary-stat.total .summary-num { color: var(--accent); }

.summary-stat.present .summary-lbl { color: var(--success); opacity: 0.8; }
.summary-stat.absent .summary-lbl { color: var(--danger); opacity: 0.8; }
.summary-stat.total .summary-lbl { color: var(--accent); opacity: 0.8; }


/* ═══════════════════════════
   STUDENT ROW
   ═══════════════════════════ */
.student-row {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer; transition: var(--transition);
}
.student-row:hover { background: rgba(30,144,255,0.04); }
.student-roll {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: var(--text-2);
  box-shadow: var(--neu-shadow);
}
.student-name { flex: 1; font-size: 15px; font-weight: 600; color: #fff; word-break: break-word; line-height: 1.3; }


/* ═══════════════════════════
   BATCH CHIPS
   ═══════════════════════════ */
.batch-chips {
  display: flex; gap: 16px; justify-content: space-evenly; flex-wrap: wrap;
  margin-bottom: 16px; padding: 8px 0;
}
.batch-chip {
  flex: 1; min-width: 44px; max-width: 64px; aspect-ratio: 1 / 1;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-surface); border: 1px solid var(--border-color);
  border-radius: 50%; color: var(--text-3); font-weight: 700;
  cursor: pointer; transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: var(--neu-shadow); font-size: 15px; position: relative; overflow: hidden;
}
.batch-chip:hover { border-color: rgba(255,255,255,0.12); color: var(--text-1); }
.batch-chip.selected, .batch-chip.active {
  background: var(--accent-gradient); color: #fff; border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow), 0 0 0 2px rgba(30,144,255,0.2);
  animation: batchGlowPulse 2s infinite alternate ease-in-out;
}

@keyframes batchGlowPulse {
  0%   { box-shadow: 0 0 16px var(--accent-glow), 0 0 0 2px rgba(30,144,255,0.2); transform: scale(1); }
  100% { box-shadow: 0 0 32px var(--accent-glow), 0 0 0 4px rgba(30,144,255,0.1); transform: scale(1.06); }
}





/* Subject list items */
.subject-list-item {
  display: flex; align-items: center; gap: 14px;
  padding: 16px;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 10px; cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--neu-shadow);
  position: relative; overflow: hidden;
}
.subject-list-item:hover { transform: translateY(-4px); box-shadow: var(--neu-shadow-lg); border-color: rgba(255,255,255,0.15); }


/* ═══════════════════════════
   SECTION UTILS
   ═══════════════════════════ */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.section-title { font-size: 16px; font-weight: 600; color: #fff; }
.section-action { font-size: 14px; font-weight: 600; color: var(--accent); cursor: pointer; }
.section-action:hover { text-decoration: underline; }

.empty-state { text-align: center; padding: 48px 24px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.empty-icon { font-size: 48px; color: var(--text-4); opacity: 0.5; }
.empty-title { font-size: 16px; font-weight: 600; color: var(--text-3); }

/* ═══════════════════════════
   PREMIUM LOADER OVERLAY — 3D Lively System
   ═══════════════════════════ */
.loader-overlay {
  position: fixed; inset: 0; z-index: 10000;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(16px) saturate(1.6);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  display: flex; align-items: center; justify-content: center;
  animation: overlayFadeIn 0.25s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.loader-content {
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  text-align: center;
  perspective: 800px;
}

.loader-icon-wrap {
  display: flex; align-items: center; justify-content: center;
  font-size: 56px; color: var(--accent);
  filter: drop-shadow(0 0 18px var(--accent-glow));
  animation: loaderIcon3D 1.4s cubic-bezier(0.45, 0, 0.55, 1) infinite;
  position: relative;
  width: 100px; height: 100px;
  transform-style: preserve-3d;
}

/* Orbital ring 1 */
.loader-icon-wrap::before {
  content: '';
  position: absolute;
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: rgba(30,144,255,0.7);
  border-right-color: rgba(30,144,255,0.3);
  animation: loaderOrbit1 1.2s linear infinite;
  filter: drop-shadow(0 0 6px rgba(30,144,255,0.5));
}

/* Orbital ring 2 */
.loader-icon-wrap::after {
  content: '';
  position: absolute;
  width: 140px; height: 140px;
  border-radius: 50%;
  border: 1.5px solid transparent;
  border-bottom-color: rgba(30,144,255,0.5);
  border-left-color: rgba(30,144,255,0.15);
  animation: loaderOrbit2 1.8s linear infinite;
  filter: drop-shadow(0 0 8px rgba(30,144,255,0.25));
}

.loader-text {
  color: #fff; font-size: 13px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  text-shadow: 0 0 12px rgba(30, 144, 255, 0.5);
  margin-top: 14px;
  animation: loaderTextPulse 1.4s ease-in-out infinite;
}

@keyframes overlayFadeIn {
  from { opacity: 0; backdrop-filter: blur(0px); }
  to   { opacity: 1; backdrop-filter: blur(16px); }
}

@keyframes loaderIcon3D {
  0%   { transform: translateY(0) scale(1) rotateY(0deg);
         filter: drop-shadow(0 0 15px var(--accent-glow)); }
  25%  { transform: translateY(-10px) scale(1.08) rotateY(8deg);
         filter: drop-shadow(0 0 22px var(--accent-glow)) brightness(1.15); }
  50%  { transform: translateY(-16px) scale(1.12) rotateY(0deg);
         filter: drop-shadow(0 0 30px rgba(30,144,255,0.8)) brightness(1.25); }
  75%  { transform: translateY(-10px) scale(1.08) rotateY(-8deg);
         filter: drop-shadow(0 0 22px var(--accent-glow)) brightness(1.15); }
  100% { transform: translateY(0) scale(1) rotateY(0deg);
         filter: drop-shadow(0 0 15px var(--accent-glow)); }
}

@keyframes loaderOrbit1 {
  0%   { transform: rotateZ(0deg) rotateX(65deg); }
  100% { transform: rotateZ(360deg) rotateX(65deg); }
}

@keyframes loaderOrbit2 {
  0%   { transform: rotateZ(0deg) rotateX(-55deg) rotateY(25deg); }
  100% { transform: rotateZ(-360deg) rotateX(-55deg) rotateY(25deg); }
}

@keyframes loaderTextPulse {
  0%, 100% { opacity: 0.7; letter-spacing: 0.18em; }
  50%      { opacity: 1; letter-spacing: 0.24em; }
}


/* ═══════════════════════════
   STAGGER CARD ANIMATIONS
   ═══════════════════════════ */
@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}



/* Quick cards stagger */
.quick-card {
  animation: cardFadeIn 0.4s ease backwards;
}
.quick-card:nth-child(1) { animation-delay: 0.00s; }
.quick-card:nth-child(2) { animation-delay: 0.08s; }
.quick-card:nth-child(3) { animation-delay: 0.16s; }
.quick-card:nth-child(4) { animation-delay: 0.24s; }




/* ═══════════════════════════
   BUTTON PRESS GLOW PULSE
   ═══════════════════════════ */
@keyframes glowPulse {
  0%   { box-shadow: 0 0 16px var(--accent-glow); }
  50%  { box-shadow: 0 0 28px rgba(30,144,255,0.7); }
  100% { box-shadow: 0 0 16px var(--accent-glow); }
}
.btn-primary:active {
  transform: scale(0.94);
  animation: glowPulse 0.3s ease;
}


/* ═══════════════════════════
   HOVER SWEEP (shimmer on cards)
   ═══════════════════════════ */
.glass-card::after, .subject-list-item::after, .quick-card::after, .role-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.04), transparent);
  transform: translateX(-100%) skewX(-15deg);
  transition: transform 0.6s ease;
  pointer-events: none;
  z-index: 1;
}
.glass-card:hover::after, .subject-list-item:hover::after, .quick-card:hover::after, .role-card:hover::after {
  transform: translateX(100%) skewX(-15deg);
}


/* ═══════════════════════════
   UTILITY CLASSES
   ═══════════════════════════ */
.text-center { text-align: center; }
.color-muted { color: var(--text-4); }
.color-danger { color: var(--danger); }


/* ═══════════════════════════
   SCROLLBAR
   ═══════════════════════════ */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }




/* ═══════════════════════════
   SAFE AREA (iPhone notch)
   ═══════════════════════════ */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .screen-scroll, .modal-body {
    padding-bottom: max(32px, env(safe-area-inset-bottom));
  }
}


/* ═══════════════════════════
   PHOSPHOR ICONS SIZING
   ═══════════════════════════ */
i[class^="ph"], i[class*=" ph-"] {
  font-size: 1.25em;
  vertical-align: middle;
  line-height: 1;
  display: inline-block;
}

.splash-logo-emoji i {
  font-size: 1em;
  color: var(--accent);
  filter: drop-shadow(0 4px 12px var(--accent-glow));
}

.empty-icon i, .session-complete-icon i {
  font-size: 1em;
}

/* ═══════════════════════════
   SLIDER / RANGE INPUT
   ═══════════════════════════ */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-surface);
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  cursor: pointer;
  border: none;
}

/* ── UI Animations — 3D Lively System ── */
.pulse-glow-wrapper {
  position: relative;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 24px;
  perspective: 500px;
}

.pulse-glow-wrapper::before {
  content: '';
  position: absolute;
  width: 90%;
  height: 90%;
  top: 5%;
  left: 5%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  filter: blur(18px);
  opacity: 0.08;
  z-index: 0;
  animation: pulseGlowAnim3D 2.4s cubic-bezier(0.45, 0, 0.55, 1) infinite alternate;
}

.pulse-glow-img {
  height: 70px;
  width: auto;
  object-fit: contain;
  position: relative;
  z-index: 1;
  animation: imgFloat3D 3s ease-in-out infinite;
}

@keyframes pulseGlowAnim3D {
  0%   { transform: scale(0.85) rotate(-3deg); opacity: 0.05; }
  50%  { transform: scale(1.15) rotate(0deg); opacity: 0.3; }
  100% { transform: scale(1.35) rotate(3deg); opacity: 0.15; }
}

@keyframes imgFloat3D {
  0%, 100% { transform: translateY(0) rotateX(0deg) scale(1); }
  50%      { transform: translateY(-6px) rotateX(3deg) scale(1.03); }
}

/* Heartbeat for unselected subject — 3D Bounce */
.heart-beat {
  animation: heartBeat3D 1.6s cubic-bezier(0.45, 0, 0.55, 1) infinite;
  border-color: rgba(30, 144, 255, 0.3) !important;
}
@keyframes heartBeat3D {
  0%   { transform: scale(1) translateY(0); box-shadow: var(--neu-shadow); }
  15%  { transform: scale(1.025) translateY(-2px); box-shadow: var(--neu-shadow), 0 0 12px var(--accent-soft); }
  30%  { transform: scale(0.99) translateY(0); box-shadow: var(--neu-shadow); }
  45%  { transform: scale(1.015) translateY(-1px); box-shadow: var(--neu-shadow), 0 0 8px var(--accent-soft); }
  60%, 100% { transform: scale(1) translateY(0); box-shadow: var(--neu-shadow); }
}