.hidden { display: none !important; }

:root {
  --clock-primary: #2150c9;
  --clock-success: #10b981;
  --clock-warning: #f59e0b;
  --clock-danger: #ef4444;
  --clock-bg: #ffffff;
  --clock-surface: #f8fafc;
  --clock-text: #1e293b;
  --clock-muted: #64748b;
  --font-mono: 'Roboto Mono', 'Courier New', Courier, monospace;
}

[data-theme="dark"] {
  --clock-bg: #0f172a;
  --clock-surface: #1e293b;
  --clock-text: #f8fafc;
  --clock-muted: #94a3b8;
}

.reloj-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  background: var(--clock-surface);
  border-radius: 24px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  min-height: 600px;
  justify-content: center;
}

.mode-selector {
  display: flex;
  background: rgba(0, 0, 0, 0.05);
  padding: 0.5rem;
  border-radius: 100px;
  gap: 0.25rem;
}

[data-theme="dark"] .mode-selector {
  background: rgba(255, 255, 255, 0.05);
}

.mode-btn {
  border: none;
  background: transparent;
  padding: 0.75rem 1.5rem;
  border-radius: 100px;
  color: var(--clock-muted);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mode-btn.active {
  background: var(--clock-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(33, 80, 201, 0.3);
}

.clock-display-wrapper {
  position: relative;
  width: 450px;
  height: 450px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.progress-ring-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-ring__circle {
  transition: stroke-dashoffset 0.1s linear, stroke 0.3s ease;
}

.time-display {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 15vw, 6.5rem);
  font-weight: 700;
  color: var(--clock-text);
  line-height: 1;
  z-index: 1;
  font-variant-numeric: tabular-nums;
}

.ms-display {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  color: var(--clock-muted);
  font-weight: 500;
  z-index: 1;
  margin-top: -1rem;
}

.controls-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
  max-width: 400px;
  animation: fadeIn 0.4s ease-out;
}

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

.quick-presets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.btn-preset {
  background: var(--clock-bg);
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: var(--clock-text);
  padding: 0.75rem;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

[data-theme="dark"] .btn-preset {
  border-color: rgba(255, 255, 255, 0.1);
}

.btn-preset:hover {
  background: var(--clock-primary);
  color: white;
  border-color: var(--clock-primary);
  transform: translateY(-2px);
}

.manual-input {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 2.5rem;
  background: rgba(0, 0, 0, 0.03);
  padding: 1rem;
  border-radius: 16px;
}

[data-theme="dark"] .manual-input {
  background: rgba(255, 255, 255, 0.03);
}

.manual-input input {
  width: 90px;
  text-align: center;
  background: transparent;
  border: none;
  border-bottom: 3px solid var(--clock-muted);
  color: var(--clock-text);
  padding: 0.25rem;
  font-family: inherit;
  font-size: inherit;
  transition: border-color 0.2s;
}

.manual-input input:focus {
  outline: none;
  border-bottom-color: var(--clock-primary);
}

.manual-input input::-webkit-outer-spin-button,
.manual-input input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.manual-input input[type=number] {
  -moz-appearance: textfield;
}

.action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  align-items: center;
  min-height: 80px;
}

.action-buttons button {
  padding: 1.25rem 2.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.action-buttons button:hover:not(:disabled) {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.action-buttons button:active:not(:disabled) {
  transform: translateY(0);
}

.btn-start {
  background: var(--clock-success);
  color: white;
  border: none;
}

.btn-pause {
  background: var(--clock-danger);
  color: white;
  border: none;
}

.btn-reset-alt {
  background: var(--clock-bg);
  border: 2px solid var(--clock-muted);
  color: var(--clock-muted);
}

.action-buttons button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(1);
}

.tool-utils {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
}

.btn-util {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: none;
  color: var(--clock-muted);
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s;
}

.btn-util:hover {
  color: var(--clock-primary);
}

.btn-util svg {
  width: 20px;
  height: 20px;
}

/* Alarma visual */
.alarm-flash {
  animation: flashRed 0.5s infinite alternate;
}

@keyframes flashRed {
  from { background-color: var(--clock-surface); }
  to { background-color: rgba(239, 68, 68, 0.2); }
}

/* Fullscreen adjustments */
#relojStage:fullscreen {
  background: var(--clock-bg);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#relojStage:fullscreen .reloj-container {
  width: 100vw;
  height: 100vh;
  border-radius: 0;
  box-shadow: none;
}

#relojStage:fullscreen .clock-display-wrapper {
  transform: scale(1.5);
}

@media (max-width: 600px) {
  .clock-display-wrapper {
    width: 320px;
    max-width: 100%;
    height: 320px;
  }
  
  .time-display {
    font-size: clamp(3rem, 20vw, 5rem);
  }
  
  .progress-ring {
    width: 320px;
    height: 320px;
  }
  
  .progress-ring__circle, .progress-ring__circle-bg {
    r: 140;
    cx: 160;
    cy: 160;
  }

  .action-buttons button {
    flex: 1 1 auto;
    padding: 1rem 1.25rem;
    font-size: 1.05rem;
  }

  .tool-utils {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
}


/* EduTools visual refresh: shared tool polish */
:root {
  --sl-primary: var(--color-primary);
  --sl-primary-hover: var(--color-primary-dark);
  --sl-accent: var(--color-accent);
  --sl-accent-hover: var(--color-accent-dark);
  --sl-border: var(--color-border);
  --gc2-blue: var(--color-primary);
  --gc2-blue-lt: var(--color-primary-soft);
  --die-bg: var(--color-primary);
  --arena-bg: var(--color-primary-soft);
  --stat-bar-color: var(--color-primary);
}

.tool-stage {
  border-color: rgb(219 226 220 / 0.96);
  background: rgb(255 255 255 / 0.94);
  box-shadow: 0 18px 45px rgb(23 58 70 / 0.08);
}

.tool-stage :is(.sl-step, .gc2-panel, .grade-panel, .team-card, .rb-panel, .rb-card, .rb-section, .md-card, .md-panel, .vote-card, .clock-panel, .roulette-panel, .noise-card, .stats-section, .dice-arena) {
  border-color: rgb(219 226 220 / 0.96);
  border-radius: var(--radius-xl);
  box-shadow: 0 16px 36px rgb(23 58 70 / 0.08);
}

.tool-stage :is(input, textarea, select, .sl-qty-input, .gc2-meta-input, .gc2-setting select, .gc2-setting input[type="number"]) {
  border-color: rgb(202 213 205 / 0.95);
  background-color: #ffffff;
}

.tool-stage :is(input, textarea, select, .sl-qty-input, .gc2-meta-input):focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgb(23 107 135 / 0.12);
}

.btn--ai,
.gc2-btn--primary,
.btn-giant,
.rb-btn--primary,
.md-primary-action,
.vote-primary,
.clock-primary {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
  box-shadow: 0 14px 24px rgb(23 107 135 / 0.18);
}

.btn--ai:hover,
.gc2-btn--primary:hover,
.btn-giant:hover,
.rb-btn--primary:hover,
.md-primary-action:hover,
.vote-primary:hover,
.clock-primary:hover {
  background: var(--color-primary-dark);
}

.sl-step::before {
  background: linear-gradient(90deg, var(--color-primary), #1b7f67, var(--color-accent));
}

.sl-preset.active,
.btn-toggle.active,
.grade-meter span {
  background: var(--color-primary);
}

.sl-qty-btn:hover,
.sl-preset:hover {
  border-color: rgb(23 107 135 / 0.34);
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  box-shadow: 0 10px 20px rgb(23 107 135 / 0.12);
}

.rb-section__icon,
.rb-export-card__icon,
.edu-warning-icon,
.face {
  display: inline-grid;
  place-items: center;
  color: var(--color-primary-dark);
}

.edu-warning-icon {
  width: 3.75rem;
  height: 3.75rem;
  margin-bottom: 12px;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
}

.rb-section__icon,
.rb-export-card__icon {
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
}

.material-symbols-outlined {
  vertical-align: middle;
}