/* Apple-inspired Minimalist Styling System */
@import url('https://fonts.googleapis.com/css2?family=SF+Pro+Display:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-base: #f5f5f7; /* Apple off-white */
  --bg-surface: #ffffff; /* Pure white card */
  --bg-surface-hover: #fafafa;
  --border-color: #d2d2d7; /* Soft Apple gray border */
  --border-color-active: #86868b;
  
  --accent-blue: #0071e3; /* Apple signature blue */
  --accent-blue-hover: #0077ed;
  --accent-whatsapp: #34c759; /* Apple system green */
  --accent-purple: #af52de; /* Apple system purple */
  /* Aliased to the blue accent so legacy references stay on-theme */
  --accent-cyan: #0071e3;
  --accent-teal: #0077ed;
  
  --text-primary: #1d1d1f; /* Apple charcoal */
  --text-secondary: #86868b; /* Apple medium gray */
  --text-muted: #a1a1a6; /* Apple light gray */
  
  --success: #34c759;
  --danger: #ff3b30; /* Apple system red */
  --warning: #ff9500; /* Apple system orange */
  
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-active: 0 8px 30px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: 'SF Pro Display', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.47;
  letter-spacing: -0.015em;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: #c1c1c7;
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Surface panel (Apple-style white card) */
.glass-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-subtle);
}

/* Layout */
.dashboard-container {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  background-color: #ffffff;
}

.sidebar {
  background: var(--bg-base);
  border-right: 1px solid var(--border-color);
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.main-content {
  padding: 3rem 4rem;
  background-color: #ffffff;
  overflow-y: auto;
  max-height: 100vh;
  animation: fadeInUp 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Typography */
h1 {
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 2.5rem;
  letter-spacing: -0.01em;
}

/* Stats Cards (Apple Dashboard style) */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.stat-card {
  background: var(--bg-base);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: all 0.2s ease;
  box-shadow: none;
}

.stat-card:hover {
  border-color: var(--border-color-active);
  background: #f0f0f3;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 2.25rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-footer {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Main Grid Layouts */
.content-grid {
  display: grid;
  grid-template-columns: 62% 38%;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 1100px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  .dashboard-container {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: none;
  }
  .main-content {
    padding: 2rem;
  }
}

/* Form Inputs */
.form-group {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Responsive form grids (collapse to a single column on small screens) */
.form-grid-2,
.form-grid-3 {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.form-grid-2 { grid-template-columns: 1fr 1fr; }
.form-grid-3 { grid-template-columns: 1fr 1fr 1fr; }

@media (max-width: 640px) {
  .form-grid-2,
  .form-grid-3 {
    grid-template-columns: 1fr;
  }
}

.form-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.8rem 1rem;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: all 0.15s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
}

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

/* Apple-style Buttons */
.btn {
  padding: 0.7rem 1.4rem;
  border-radius: 9999px; /* Capsule buttons */
  font-family: inherit;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
}

.btn-secondary {
  background-color: #f5f5f7;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: #e8e8ed;
}

.btn-whatsapp {
  background-color: var(--accent-whatsapp);
  color: #ffffff;
}

.btn-whatsapp:hover {
  background-color: #2eb350;
}

/* Chat bubble styling matching Apple iMessage */
.feed-box {
  border: 1px solid var(--border-color);
  border-radius: 16px;
  background-color: #ffffff;
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
}

.feed-header {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-color);
  background-color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.feed-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  background-color: #ffffff;
}

.message-bubble {
  max-width: 65%;
  padding: 0.75rem 1.2rem;
  border-radius: 18px;
  font-size: 0.95rem;
  line-height: 1.4;
  position: relative;
  word-break: break-word;
}

/* Apple iMessage - blue outbound bubble */
.message-bubble.outbound {
  align-self: flex-end;
  background-color: var(--accent-blue);
  color: #ffffff;
  border-bottom-right-radius: 4px;
}

/* WhatsApp outbound - green bubble */
.message-bubble.outbound.whatsapp {
  background-color: var(--accent-whatsapp);
  color: #ffffff;
}

/* Inbound - light gray bubble */
.message-bubble.inbound {
  align-self: flex-start;
  background-color: #e8e8ed; /* Apple iMessage Gray */
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
}

.message-meta {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.25rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.message-bubble.inbound .message-meta {
  color: var(--text-secondary);
}

.message-media {
  max-width: 100%;
  border-radius: 12px;
  margin-bottom: 0.4rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.badge-sms {
  background: #e8f3ff;
  color: var(--accent-blue);
}

.badge-whatsapp {
  background: #eafaf1;
  color: var(--accent-whatsapp);
}

.badge-success {
  background: #eafaf1;
  color: var(--success);
}

.badge-failed {
  background: #ffebeb;
  color: var(--danger);
}

/* Tables */
.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.data-table th {
  padding: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.8rem;
  text-transform: none;
}

.data-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.data-table tr:hover td {
  background: var(--bg-base);
}