/**
 * Shared Components
 * Buttons, Cards, Theme Toggle, Modals, etc.
 */

/* ===== GLOBAL RESET ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100dvh;
  margin: 0;
  padding: 0;
  overflow-x: hidden; /* Prevent horizontal scroll */
  overflow-y: auto; /* Allow scroll context for pull-to-refresh */
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-surface); /* Match questions section color */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Participant page specific styles */
body.participant-page {
  overflow-x: hidden;
  overflow-y: auto; /* Enable pull-to-refresh on participant page */
  background-color: var(--color-background); /* Match animation section color */
}

/* ===== THEME TOGGLE BUTTON ===== */
.theme-toggle {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 300;
  width: 3rem; /* 48px */
  height: 3rem; /* 48px */
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-icon {
  width: 1.25rem; /* 20px converted to rem */
  height: 1.25rem; /* 20px converted to rem */
  color: var(--color-text-primary);
  transition: opacity var(--transition-fast);
}

/* Show sun in dark mode, moon in light mode */
:root[data-theme="dark"] .sun-icon {
  opacity: 1;
}

:root[data-theme="dark"] .moon-icon {
  opacity: 0;
  position: absolute;
}

:root[data-theme="light"] .sun-icon {
  opacity: 0;
  position: absolute;
}

:root[data-theme="light"] .moon-icon {
  opacity: 1;
}

/* ===== BUTTONS ===== */
.btn-primary,
.btn-secondary,
.btn-danger {
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
  min-height: 48px; /* Touch-friendly */
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary));
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--color-border-hover);
  background-color: var(--color-surface-elevated);
  transform: translateY(-1px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), #A85147);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== CARDS ===== */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-hover);
}

/* ===== INPUTS ===== */
input[type="text"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--color-border-hover);
}

/* ===== LOGO ===== */
.logo-container {
  position: fixed;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: 50;
}

.logo {
  height: 32px;
  width: auto;
  filter: drop-shadow(var(--shadow-sm));
}

/* Dark theme: use white logo */
:root[data-theme="dark"] .logo {
  content: url('/assets/afam-logo-white.svg');
}

/* User ID Display */
.user-id-display {
  display: none;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: 0.5px;
  font-family: 'Courier New', monospace;
}

/* Light theme: use standard logo */
:root[data-theme="light"] .logo {
  content: url('/assets/afam-logo.svg');
}

/* Admin header logo */
.admin-header .logo {
  height: 28px;
}

/* ===== MODAL ===== */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal-overlay);
}

.modal-content {
  position: relative;
  z-index: var(--z-modal);
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  border: 1px solid var(--color-border);
}

.modal-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.modal-message {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: var(--line-height-relaxed);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* ===== UTILITIES ===== */
.text-center {
  text-align: center;
}

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background-color: var(--color-background);
}

::-webkit-scrollbar-thumb {
  background-color: var(--color-accent-subtle);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--color-accent);
}

/* ===== MOBILE RESPONSIVENESS ===== */
@media (max-width: 768px) {
  .theme-toggle {
    width: 40px;
    height: 40px;
  }

  .theme-icon {
    width: 18px;
    height: 18px;
  }

  .logo {
    height: 28px;
  }

  .btn-primary,
  .btn-secondary,
  .btn-danger {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }

  .modal-content {
    padding: var(--spacing-xl);
  }
}