/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.5;
  min-height: 100vh;
  padding-bottom: calc(70px + var(--safe-bottom));
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

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

.text-sm {
  font-size: 0.875rem;
}

.text-xs {
  font-size: 0.75rem;
}

.font-display {
  font-family: var(--font-display);
}

.stat-number {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* Layout */
#app {
  max-width: 100vw;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 768px;
  margin: 0 auto;
  padding: var(--spacing-md);
}

.page {
  padding-top: calc(var(--safe-top) + var(--spacing-md));
  padding-bottom: var(--spacing-xl);
  min-height: 100vh;
}

/* Safe area padding */
.safe-top {
  padding-top: calc(var(--safe-top) + var(--spacing-md));
}

.safe-bottom {
  padding-bottom: calc(var(--safe-bottom) + var(--spacing-md));
}

/* Buttons */
button, .btn {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover, .btn-primary:active {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-glow {
  background: linear-gradient(135deg, var(--color-primary) 0%, #a78bfa 100%);
  color: white;
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.125rem;
  box-shadow: var(--shadow-glow);
}

.btn-glow:hover, .btn-glow:active {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
}

.btn-destructive {
  background-color: var(--color-destructive);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn-destructive:hover {
  background-color: var(--color-destructive-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-foreground);
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn-ghost:hover {
  background-color: var(--color-surface);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
}

.btn-xl {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.125rem;
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Cards */
.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-primary);
}

/* Inputs */
input, textarea, select {
  font-family: var(--font-body);
  font-size: 1rem;
  background-color: var(--color-surface);
  color: var(--color-foreground);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  width: 100%;
  transition: all var(--transition-base);
}

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

textarea {
  resize: vertical;
  min-height: 100px;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-surface);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: var(--z-toast);
  pointer-events: none;
}

.toast {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
  animation: toast-in 200ms ease-out;
  pointer-events: auto;
  min-width: 200px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.toast-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-xs);
}

.toast.success .toast-icon {
  background-color: var(--color-success);
}

.toast.error .toast-icon {
  background-color: var(--color-destructive);
}

.toast.info .toast-icon {
  background-color: var(--color-primary);
}

.toast-message {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-foreground);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--spacing-sm);
}

.gap-4 {
  gap: var(--spacing-md);
}

.mt-2 {
  margin-top: var(--spacing-sm);
}

.mt-4 {
  margin-top: var(--spacing-md);
}

.mb-2 {
  margin-bottom: var(--spacing-sm);
}

.mb-4 {
  margin-bottom: var(--spacing-md);
}

.mb-6 {
  margin-bottom: var(--spacing-lg);
}

.w-full {
  width: 100%;
}

.text-center {
  text-align: center;
}