/**
 * EchoSocial Design System
 *
 * Color Palette:
 * - Midnight: #0F172A (background)
 * - Charcoal: #1E293B (surfaces)
 * - Slate: #334155 (borders, dividers)
 * - Steel: #64748B (secondary text)
 * - Silver: #CBD5E1 (primary text)
 * - Ember: #F97316 (primary accent - orange)
 * - Ember Light: #FB923C (hover states)
 * - Success: #10B981
 * - Error: #EF4444
 *
 * Typography:
 * - Display: Space Grotesk
 * - Body: Inter
 */

:root {
  /* Colors */
  --color-midnight: #0F172A;
  --color-charcoal: #1E293B;
  --color-slate: #334155;
  --color-steel: #64748B;
  --color-silver: #CBD5E1;
  --color-white: #F8FAFC;

  --color-ember: #F97316;
  --color-ember-light: #FB923C;
  --color-ember-dark: #EA580C;

  --color-success: #10B981;
  --color-error: #EF4444;
  --color-warning: #F59E0B;

  /* Typography */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-midnight);
  color: var(--color-silver);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-ember);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-ember-light);
}

.link-primary {
  color: var(--color-ember);
  font-weight: 500;
}

.link-primary:hover {
  color: var(--color-ember-light);
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-ember);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-ember-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background-color: var(--color-charcoal);
  color: var(--color-silver);
  border: 1px solid var(--color-slate);
}

.btn-secondary:hover {
  background-color: var(--color-slate);
  color: var(--color-white);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 14px;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: var(--radius-md);
  background-color: transparent;
  color: var(--color-steel);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background-color: var(--color-slate);
  color: var(--color-white);
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-silver);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--color-slate);
  border-radius: var(--radius-md);
  background-color: var(--color-charcoal);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 14px;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-ember);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-group small {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 12px;
  color: var(--color-steel);
}

.error-message {
  padding: 12px;
  margin-bottom: var(--spacing-md);
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  color: var(--color-error);
  font-size: 14px;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--spacing-md);
}

.modal-content {
  background-color: var(--color-charcoal);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-slate);
}

.modal-header h3 {
  font-size: 20px;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  color: var(--color-steel);
  cursor: pointer;
  line-height: 1;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.modal-close:hover {
  background-color: var(--color-slate);
  color: var(--color-white);
}

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

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

/* Loading States */
.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  color: var(--color-steel);
  font-size: 14px;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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