/**
 * HLPFL Social Media Manager - Production Styles
 * Accessible, responsive, and beautiful
 */

/* ============================================================================
   CSS VARIABLES
   ============================================================================ */

:root {
  /* Colors - Dark Theme matching hlpfl.org */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #1a1a1a;
  --color-bg-tertiary: #2a2a2a;
  --color-border: #333333;
  --color-border-light: #404040;
  
  /* Brand Colors */
  --color-primary: #d4915d;
  --color-primary-hover: #c87f4a;
  --color-primary-dark: #b86d38;
  
  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #b0b0b0;
  --color-text-tertiary: #808080;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-modal: 2000;
  --z-notification: 3000;
  --z-loading: 4000;
}

/* ============================================================================
   RESET & 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-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

/* Focus visible for keyboard navigation */
.keyboard-nav *:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-bg-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* Screen reader only */
.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;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px; /* Touch target size */
}

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

.btn-primary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-danger {
  background-color: transparent;
  border-color: var(--color-error);
  color: var(--color-error);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--color-error);
  color: white;
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 44px;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(212, 145, 93, 0.1);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-tertiary);
}

/* Checkbox styling */
input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

/* ============================================================================
   AUTH CONTAINER
   ============================================================================ */

.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.auth-card {
  width: 100%;
  max-width: 450px;
  padding: var(--spacing-2xl);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.auth-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.auth-header .logo {
  width: 80px;
  height: 80px;
  margin-bottom: var(--spacing-lg);
}

.auth-header h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.auth-header p {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.auth-section {
  display: none;
}

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

.auth-form {
  margin-bottom: var(--spacing-lg);
}

.auth-switch {
  text-align: center;
  color: var(--color-text-secondary);
}

.auth-switch a {
  color: var(--color-primary);
  font-weight: 500;
}

/* ============================================================================
   DASHBOARD LAYOUT
   ============================================================================ */

.dashboard-container {
  display: none;
  min-height: 100vh;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header .logo {
  width: 40px;
  height: 40px;
}

.header h1 {
  font-size: var(--font-size-xl);
  margin: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.user-info {
  color: var(--color-text-secondary);
}

/* Navigation */
.navigation {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-xl);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
}

.nav-item:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.nav-item.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background-color: rgba(212, 145, 93, 0.1);
}

.nav-item .icon {
  font-size: var(--font-size-lg);
}

/* Main Content */
.main-content {
  padding: var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
}

.section {
  display: none;
}

.section.active {
  display: block;
  animation: fadeIn var(--transition-base);
}

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

/* ============================================================================
   CARDS
   ============================================================================ */

.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 0;
}

/* ============================================================================
   POST CREATION
   ============================================================================ */

.platform-selector {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.platform-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.platform-option input[type="checkbox"]:checked + label {
  color: var(--color-primary);
}

.char-count {
  text-align: right;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-sm);
}

.char-count.over-limit {
  color: var(--color-error);
}

.schedule-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

/* ============================================================================
   POSTS LIST
   ============================================================================ */

.posts-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.post-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-fast);
}

.post-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.post-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.post-platforms {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.platform-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-transform: capitalize;
}

.post-status {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-transform: capitalize;
}

.status-draft {
  background-color: rgba(128, 128, 128, 0.2);
  color: var(--color-text-secondary);
}

.status-scheduled {
  background-color: rgba(59, 130, 246, 0.2);
  color: var(--color-info);
}

.status-published {
  background-color: rgba(16, 185, 129, 0.2);
  color: var(--color-success);
}

.status-failed {
  background-color: rgba(239, 68, 68, 0.2);
  color: var(--color-error);
}

.post-content {
  color: var(--color-text-primary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.post-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.post-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.post-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* ============================================================================
   ANALYTICS
   ============================================================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.platform-stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
}

.platform-name {
  font-weight: 500;
  text-transform: capitalize;
}

.platform-count {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary);
}

.activity-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-content {
  flex: 1;
  color: var(--color-text-primary);
}

.activity-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ============================================================================
   SOCIAL ACCOUNTS
   ============================================================================ */

.accounts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.account-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

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

.account-icon {
  font-size: var(--font-size-3xl);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
}

.account-info {
  flex: 1;
}

.account-info h3 {
  margin-bottom: var(--spacing-sm);
}

.account-status {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
}

.account-status.connected {
  color: var(--color-success);
}

/* ============================================================================
   NOTIFICATIONS
   ============================================================================ */

.notification {
  position: fixed;
  top: var(--spacing-xl);
  right: var(--spacing-xl);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-notification);
  opacity: 0;
  transform: translateX(400px);
  transition: all var(--transition-base);
  max-width: 400px;
}

.notification.show {
  opacity: 1;
  transform: translateX(0);
}

.notification-success {
  border-left: 4px solid var(--color-success);
}

.notification-error {
  border-left: 4px solid var(--color-error);
}

.notification-warning {
  border-left: 4px solid var(--color-warning);
}

.notification-info {
  border-left: 4px solid var(--color-info);
}

/* ============================================================================
   LOADING OVERLAY
   ============================================================================ */

#loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ============================================================================
   EMPTY STATES
   ============================================================================ */

.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-secondary);
}

.empty-state p {
  font-size: var(--font-size-lg);
}

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

@media (max-width: 768px) {
  .header {
    padding: var(--spacing-md);
  }
  
  .header h1 {
    font-size: var(--font-size-lg);
  }
  
  .navigation {
    padding: var(--spacing-md);
  }
  
  .main-content {
    padding: var(--spacing-md);
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .schedule-options {
    grid-template-columns: 1fr;
  }
  
  .accounts-grid {
    grid-template-columns: 1fr;
  }
  
  .post-footer {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: flex-start;
  }
  
  .notification {
    right: var(--spacing-md);
    left: var(--spacing-md);
    max-width: none;
  }
}

@media (max-width: 480px) {
  .platform-selector {
    grid-template-columns: 1fr;
  }
  
  .header-right {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
  .header,
  .navigation,
  .btn,
  .notification {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .card {
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }
}