/**
 * PROMOTEME DESIGN SYSTEM v1.0
 * Mobile-first, accessible, beautiful
 */

/* ================================
   FONTS - Distinctive, not generic
   ================================ */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=DM+Sans:wght@400;500;600;700&display=swap');

/* ================================
   DESIGN TOKENS
   ================================ */
:root {
  /* Brand Colors */
  --pm-coral: #FF6B5B;
  --pm-coral-dark: #E54C3C;
  --pm-coral-light: #FFE8E5;
  --pm-charcoal: #1A1A2E;
  --pm-charcoal-soft: #2D2D44;
  
  /* Functional Colors */
  --color-bg: #FAFAFA;
  --color-bg-elevated: #FFFFFF;
  --color-bg-soft: #F5F5F7;
  --color-border: #E5E5EA;
  --color-border-strong: #D1D1D6;
  
  --color-text: #1A1A2E;
  --color-text-muted: #6E6E80;
  --color-text-soft: #9999A8;
  
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;
  --color-info: #3B82F6;
  
  /* Lead Categories */
  --hot: #EF4444;
  --warm: #F59E0B;
  --cold: #3B82F6;
  --ice: #9CA3AF;
  
  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  
  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  
  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 24px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 48px rgba(0,0,0,0.16);
  --shadow-coral: 0 8px 24px rgba(255,107,91,0.25);
  
  /* Transitions */
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0F0F1A;
    --color-bg-elevated: #1A1A2E;
    --color-bg-soft: #252538;
    --color-border: #2D2D44;
    --color-text: #FAFAFA;
    --color-text-muted: #A0A0B0;
  }
}

/* ================================
   RESET & BASE
   ================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

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

a {
  color: var(--pm-coral);
  text-decoration: none;
}

a:hover {
  color: var(--pm-coral-dark);
}

/* ================================
   LAYOUT
   ================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.app-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
}

/* ================================
   SIDEBAR
   ================================ */
.sidebar {
  background: var(--color-bg-elevated);
  border-right: 1px solid var(--color-border);
  padding: var(--space-6) var(--space-4);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  padding: var(--space-2);
}

.sidebar-brand .logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--pm-coral), var(--pm-coral-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  box-shadow: var(--shadow-coral);
}

.sidebar-brand .name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-text);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-1);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

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

.nav-item.active {
  background: var(--pm-coral-light);
  color: var(--pm-coral-dark);
  font-weight: 600;
}

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

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    z-index: 100;
    transition: left var(--transition);
  }
  
  .sidebar.open {
    left: 0;
  }
}

/* ================================
   MAIN CONTENT
   ================================ */
.main-content {
  padding: var(--space-6);
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.page-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
}

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

/* ================================
   CARDS
   ================================ */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition);
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
}

/* ================================
   STATS GRID
   ================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  margin-top: var(--space-2);
  color: var(--color-text);
}

.stat-change {
  font-size: var(--text-sm);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.stat-change.up { color: var(--color-success); }
.stat-change.down { color: var(--color-danger); }

/* ================================
   BUTTONS
   ================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--pm-coral);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--pm-coral-dark);
  box-shadow: var(--shadow-coral);
  transform: translateY(-1px);
  color: white;
}

.btn-secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-soft);
  border-color: var(--color-border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  background: var(--color-bg-soft);
  color: var(--color-text);
}

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

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

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Floating Action Button (mobile) */
.fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--pm-coral), var(--pm-coral-dark));
  color: white;
  border: none;
  box-shadow: var(--shadow-coral);
  font-size: var(--text-2xl);
  cursor: pointer;
  z-index: 50;
  transition: all var(--transition);
}

.fab:hover {
  transform: scale(1.1);
}

/* ================================
   FORMS
   ================================ */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.form-label .required {
  color: var(--color-danger);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  background: var(--color-bg-elevated);
  color: var(--color-text);
  transition: all var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--pm-coral);
  box-shadow: 0 0 0 3px rgba(255,107,91,0.1);
}

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

.form-help {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
  margin-top: var(--space-1);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

/* ================================
   BADGES
   ================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-hot { background: rgba(239,68,68,0.1); color: var(--hot); }
.badge-warm { background: rgba(245,158,11,0.1); color: var(--warm); }
.badge-cold { background: rgba(59,130,246,0.1); color: var(--cold); }
.badge-ice { background: rgba(156,163,175,0.1); color: var(--ice); }

.badge-success { background: rgba(16,185,129,0.1); color: var(--color-success); }
.badge-warning { background: rgba(245,158,11,0.1); color: var(--color-warning); }
.badge-danger { background: rgba(239,68,68,0.1); color: var(--color-danger); }
.badge-info { background: rgba(59,130,246,0.1); color: var(--color-info); }

/* ================================
   TABLES
   ================================ */
.table-wrapper {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table thead {
  background: var(--color-bg-soft);
  border-bottom: 1px solid var(--color-border);
}

.table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--color-text-muted);
}

.table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.table tbody tr {
  transition: background var(--transition);
  cursor: pointer;
}

.table tbody tr:hover {
  background: var(--color-bg-soft);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

@media (max-width: 768px) {
  .table-wrapper {
    overflow-x: auto;
  }
}

/* ================================
   MODAL
   ================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: var(--space-4);
  animation: fadeIn 200ms;
}

.modal {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: slideUp 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  border: none;
  background: var(--color-bg-soft);
  cursor: pointer;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.modal-body {
  padding: var(--space-5);
}

.modal-footer {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  padding: var(--space-5);
  border-top: 1px solid var(--color-border);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ================================
   TOAST NOTIFICATIONS
   ================================ */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--pm-coral);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-lg);
  min-width: 280px;
  max-width: 400px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: slideInRight 300ms;
}

.toast.success { border-left-color: var(--color-success); }
.toast.error { border-left-color: var(--color-danger); }
.toast.warning { border-left-color: var(--color-warning); }

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ================================
   VOICE BUTTON
   ================================ */
.voice-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--pm-coral), var(--pm-coral-dark));
  color: white;
  border: none;
  cursor: pointer;
  font-size: var(--text-2xl);
  transition: all var(--transition);
  box-shadow: var(--shadow-coral);
}

.voice-btn.recording {
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255,107,91,0.7); }
  50% { transform: scale(1.05); box-shadow: 0 0 0 12px rgba(255,107,91,0); }
}

/* ================================
   LOADING
   ================================ */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--pm-coral);
  border-radius: var(--radius-full);
  animation: spin 600ms linear infinite;
}

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

.skeleton {
  background: linear-gradient(90deg, var(--color-bg-soft) 25%, var(--color-border) 50%, var(--color-bg-soft) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ================================
   EMPTY STATE
   ================================ */
.empty-state {
  text-align: center;
  padding: var(--space-12);
  color: var(--color-text-muted);
}

.empty-state .icon {
  font-size: 64px;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

.empty-state h3 {
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

/* ================================
   UTILITIES
   ================================ */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.text-sm { font-size: var(--text-sm); }
.text-muted { color: var(--color-text-muted); }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.hidden { display: none; }

/* ================================
   MOBILE OPTIMIZATIONS
   ================================ */
@media (max-width: 768px) {
  .main-content { padding: var(--space-4); }
  .page-title { font-size: var(--text-2xl); }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .modal { max-height: 95vh; }
  
  /* Bigger tap targets on mobile */
  .btn { min-height: 44px; }
  .form-input, .form-select { min-height: 44px; }
}