/**
 * Settings Page - Styles
 * Beautiful, functional settings interface
 */

/* =========================================================================
   BACKGROUND EFFECTS
   ========================================================================= */

.background-effects {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.2;
  animation: float 25s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.5) 0%, transparent 70%);
  top: -300px;
  left: -200px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.4) 0%, transparent 70%);
  bottom: -250px;
  right: -150px;
  animation-delay: 8s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.35) 0%, transparent 70%);
  top: 40%;
  left: 60%;
  transform: translate(-50%, -50%);
  animation-delay: 16s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -40px) scale(1.05); }
  66% { transform: translate(-30px, 30px) scale(0.95); }
}

/* =========================================================================
   PAGE HEADER
   ========================================================================= */

.page-header.glass-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6);
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
  position: relative;
  overflow: hidden;
}

.page-header.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #22c55e, #3b82f6, #8b5cf6);
}

.page-title {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.title-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 20px rgba(34, 197, 94, 0.4);
  animation: spin-slow 10s linear infinite;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.title-content h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.page-actions {
  display: flex;
  gap: var(--space-3);
}

/* =========================================================================
   BUTTONS
   ========================================================================= */

.btn-gradient {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(34, 197, 94, 0.5);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

/* =========================================================================
   SETTINGS NAVIGATION
   ========================================================================= */

.settings-nav.glass-panel {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3);
  background: rgba(17, 24, 39, 0.6);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
}

.settings-nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all 0.3s ease;
}

.settings-nav-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.settings-nav-btn.active {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.3) 0%, rgba(59, 130, 246, 0.3) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.2);
}

/* =========================================================================
   SETTINGS SECTIONS
   ========================================================================= */

.settings-section {
  display: none;
  animation: fadeIn 0.3s ease;
}

.settings-section.active {
  display: block;
}

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

.section-card.glass-panel {
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.section-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.section-icon {
  font-size: 40px;
}

.section-info h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 var(--space-1) 0;
}

.section-info p {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin: 0;
}

/* =========================================================================
   FORM STYLES
   ========================================================================= */

.settings-form {
  max-width: 800px;
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.label-icon {
  font-size: 18px;
}

.optional-badge {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  margin-left: var(--space-2);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-strong);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: all 0.3s ease;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: #22c55e;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: var(--space-10);
  cursor: pointer;
}

.form-hint {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-2);
}

.form-hint a {
  color: #60a5fa;
  text-decoration: none;
}

.form-hint a:hover {
  text-decoration: underline;
}

.input-with-action {
  display: flex;
  gap: var(--space-2);
}

.input-with-action .form-input {
  flex: 1;
}

.toggle-visibility {
  padding: var(--space-3);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
}

.toggle-visibility:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
}

/* =========================================================================
   SETTINGS GROUPS
   ========================================================================= */

.settings-group {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.settings-group:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.settings-group-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 var(--space-4) 0;
}

/* =========================================================================
   TOGGLE SWITCHES
   ========================================================================= */

.toggle-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toggle-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-lg);
  transition: background 0.3s ease;
}

.toggle-item:hover {
  background: rgba(0, 0, 0, 0.3);
}

.toggle-info {
  flex: 1;
}

.toggle-label {
  display: block;
  font-weight: 600;
  color: var(--text-strong);
  margin-bottom: var(--space-1);
}

.toggle-desc {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 28px;
  transition: 0.3s;
}

.toggle-slider::before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
  background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(24px);
}

/* =========================================================================
   RANGE INPUT
   ========================================================================= */

.range-with-value {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.range-input {
  flex: 1;
  height: 8px;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  outline: none;
}

.range-input::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s;
}

.range-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-value {
  min-width: 50px;
  font-weight: 600;
  color: var(--text-strong);
  text-align: right;
}

/* =========================================================================
   SIGNAL GRID
   ========================================================================= */

.signal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
}

.signal-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.signal-card:hover {
  background: rgba(0, 0, 0, 0.3);
  border-color: rgba(255, 255, 255, 0.1);
}

.signal-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.signal-icon {
  font-size: 20px;
}

.signal-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-strong);
}

/* =========================================================================
   INTERVAL GRID
   ========================================================================= */

.interval-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-4);
}

/* =========================================================================
   TIME RANGE
   ========================================================================= */

.time-range {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

/* =========================================================================
   THEME SELECTOR
   ========================================================================= */

.theme-selector {
  display: flex;
  gap: var(--space-4);
}

.theme-option {
  cursor: pointer;
}

.theme-option input {
  position: absolute;
  opacity: 0;
}

.theme-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  min-width: 100px;
}

.theme-option input:checked + .theme-preview {
  border-color: #22c55e;
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
}

.theme-preview:hover {
  background: rgba(255, 255, 255, 0.05);
}

.theme-icon {
  font-size: 32px;
}

.theme-preview span {
  font-weight: 600;
  color: var(--text-secondary);
}

.dark-theme {
  background: rgba(17, 24, 39, 0.8);
}

.light-theme {
  background: rgba(255, 255, 255, 0.1);
}

.system-theme {
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.8) 50%, rgba(255, 255, 255, 0.1) 50%);
}

/* =========================================================================
   FORM ACTIONS
   ========================================================================= */

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* =========================================================================
   RESPONSIVE
   ========================================================================= */

@media (max-width: 768px) {
  .page-header.glass-panel {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }
  
  .page-title {
    flex-direction: column;
  }
  
  .page-actions {
    width: 100%;
    justify-content: center;
  }
  
  .settings-nav.glass-panel {
    justify-content: center;
  }
  
  .settings-nav-btn span {
    display: none;
  }
  
  .section-header {
    flex-direction: column;
    text-align: center;
  }
  
  .signal-grid,
  .interval-grid,
  .time-range {
    grid-template-columns: 1fr;
  }
  
  .theme-selector {
    flex-direction: column;
    align-items: center;
  }
  
  .theme-preview {
    width: 100%;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .form-actions button {
    width: 100%;
    justify-content: center;
  }
}