/* ============================================
   GHRC Website - Loading, Dark Mode, Pace Calc
   ============================================ */

/* ── Loading Screen ── */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--color-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
  transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-screen__shoe {
  font-size: 3rem;
  animation: shoe-bounce 1.2s ease-in-out infinite;
  margin-bottom: var(--space-6);
}

.loading-screen__text {
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
  letter-spacing: 0.05em;
}

.loading-screen__dots {
  display: inline-block;
  width: 24px;
  text-align: left;
}

.loading-screen__dots::after {
  content: '';
  animation: loading-dots 1.5s steps(3, end) infinite;
}

.loading-screen__bar {
  width: 200px;
  height: 3px;
  background: var(--color-gray-800);
  border-radius: var(--radius-full);
  margin-top: var(--space-6);
  overflow: hidden;
}

.loading-screen__bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  width: 0;
  transition: width 0.3s ease-out;
}

/* ── Dark Mode Toggle ── */
.dark-mode-toggle {
  position: relative;
  width: 56px;
  height: 28px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #87CEEB, #FFD700);
  cursor: pointer;
  transition: background var(--duration-slow) var(--ease-out);
  border: 2px solid transparent;
}

[data-theme="dark"] .dark-mode-toggle {
  background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.dark-mode-toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #FFD700;
  transition: all var(--duration-normal) var(--ease-spring);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

[data-theme="dark"] .dark-mode-toggle__thumb {
  transform: translateX(28px);
  background: #c4c4ff;
}

.dark-mode-toggle__thumb::after {
  content: '\2600'; /* Sun */
  font-size: 14px;
}

[data-theme="dark"] .dark-mode-toggle__thumb::after {
  content: '\1F319'; /* Moon */
}

/* ── Pace Calculator Widget ── */
.pace-calc {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  max-width: 500px;
  margin: 0 auto;
}

.pace-calc__title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.pace-calc__form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.pace-calc__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.pace-calc__field.full-width {
  grid-column: 1 / -1;
}

.pace-calc__label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
}

.pace-calc__input {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.pace-calc__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.pace-calc__select {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-base);
  cursor: pointer;
}

.pace-calc__btn {
  grid-column: 1 / -1;
  margin-top: var(--space-2);
}

.pace-calc__results {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
  display: none;
}

.pace-calc__results.active {
  display: block;
  animation: slide-in-right var(--duration-normal) var(--ease-out);
}

.pace-calc__result-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-color-light);
}

.pace-calc__result-label {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.pace-calc__result-value {
  font-family: var(--font-mono);
  font-weight: var(--font-bold);
  color: var(--color-primary);
}

/* ── Contact Form Row ── */
.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

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

/* ── Instagram Section ── */
.instagram-section {
  text-align: center;
  padding: var(--space-12) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.instagram-section__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  color: var(--color-white);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
  border-radius: var(--radius-xl);
  transition: all var(--duration-normal) var(--ease-out);
}

.instagram-section__link:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(225, 48, 108, 0.3);
  color: var(--color-white);
}

/* ── Weekly Challenge Banner ── */
.weekly-challenge {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: var(--space-6);
  max-width: var(--max-width);
  margin: 0 auto var(--space-12);
  position: relative;
  overflow: hidden;
}

.weekly-challenge::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.weekly-challenge__icon {
  font-size: var(--text-4xl);
  flex-shrink: 0;
}

.weekly-challenge__content {
  flex: 1;
}

.weekly-challenge__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  opacity: 0.8;
  margin-bottom: var(--space-1);
}

.weekly-challenge__text {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-white);
  margin: 0;
}

@media (max-width: 640px) {
  .weekly-challenge {
    flex-direction: column;
    text-align: center;
    padding: var(--space-6);
  }
}

/* ── Toast Notification ── */
.toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-toast);
  transform: translateY(120%);
  transition: transform var(--duration-normal) var(--ease-spring);
  max-width: 400px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.toast.show {
  transform: translateY(0);
}

.toast--success { border-left: 4px solid var(--color-primary); }
.toast--error { border-left: 4px solid #ef4444; }
.toast--warning { border-left: 4px solid #f59e0b; }

.toast__close {
  margin-left: auto;
  padding: var(--space-1);
  opacity: 0.5;
  cursor: pointer;
}

.toast__close:hover {
  opacity: 1;
}