/* ==========================================================================
   CV Collect Dashboard — NoesisHiring
   Dark Theme | Green Accent (#00d4aa) | DM Sans
   ========================================================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap');

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --bg-card: #16161f;
  --bg-hover: #1e1e2a;
  
  /* Accent */
  --accent: #00d4aa;
  --accent-hover: #00e6b8;
  --accent-muted: rgba(0, 212, 170, 0.15);
  --accent-glow: rgba(0, 212, 170, 0.3);
  
  /* Text */
  --text-primary: #ffffff;
  --text-secondary: #b0b0c0;
  --text-muted: #888898;
  --text-inverse: #0a0a0f;
  
  /* Borders */
  --border-color: #2a2a35;
  --border-light: #3a3a45;
  
  /* Status Colors */
  --status-success: #00d4aa;
  --status-warning: #f5a623;
  --status-error: #e74c3c;
  --status-info: #3498db;
  
  /* Stage Colors */
  --stage-received: #3498db;
  --stage-analysed: #9b59b6;
  --stage-validated: #00d4aa;
  --stage-hired: #2ecc71;
  
  /* Typography */
  --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 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;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Layout */
  --header-height: 64px;
  --sidebar-width: 240px;
  --content-max-width: 1400px;
}

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

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(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

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); }

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

/* ==========================================================================
   Layout Components
   ========================================================================== */

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header — wrapper div (populated by js/header.js) must be sticky so the
   inner .header has room to pin. Without this, sticky on .header alone
   fails on every page because the wrapper is the same height as the header
   and scrolls away with it. ADR-018 / Sprint 12. */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.header-logo .logo-mark {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-lg);
  color: var(--text-inverse);
}

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

.header-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

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

.header-nav-item.active {
  background: var(--accent-muted);
  color: var(--accent);
}

.header-nav-item .badge {
  background: var(--accent);
  color: var(--text-inverse);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}

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

.header-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--accent);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.header-user-avatar:hover {
  border-color: var(--accent);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: var(--spacing-xl);
  max-width: var(--content-max-width);
  margin: 0 auto;
  width: 100%;
}

/* ==========================================================================
   Pipeline Metrics
   ========================================================================== */
.pipeline {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

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

.pipeline-item:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.pipeline-item.active {
  border-color: var(--accent);
  background: var(--accent-muted);
}

.pipeline-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.pipeline-dot.received { background: var(--stage-received); }
.pipeline-dot.analysed { background: var(--stage-analysed); }
.pipeline-dot.validated { background: var(--stage-validated); }
.pipeline-dot.hired { background: var(--stage-hired); }

.pipeline-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.pipeline-count {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
}

/* ==========================================================================
   Filters Bar
   ========================================================================== */
.filters-bar {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  align-items: center;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.filter-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.card-body {
  padding: var(--spacing-lg);
}

/* ==========================================================================
   Data Table
   ========================================================================== */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-secondary);
}

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

.data-table td {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.data-table .name-cell {
  font-weight: 500;
  color: var(--text-primary);
}

.data-table .score-cell {
  font-weight: 600;
  color: var(--accent);
}

/* Stage Badge */
.stage-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-transform: capitalize;
}

.stage-badge.received {
  background: rgba(52, 152, 219, 0.15);
  color: var(--stage-received);
}

.stage-badge.analysed {
  background: rgba(155, 89, 182, 0.15);
  color: var(--stage-analysed);
}

.stage-badge.validated {
  background: var(--accent-muted);
  color: var(--stage-validated);
}

.stage-badge.hired {
  background: rgba(46, 204, 113, 0.15);
  color: var(--stage-hired);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--accent);
  color: var(--text-inverse);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-icon {
  padding: var(--spacing-sm);
  min-width: 36px;
  height: 36px;
}

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

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
}

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

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23606070' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: var(--spacing-2xl);
}

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

.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-checkbox input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

/* ==========================================================================
   Login Page
   ========================================================================== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  background: 
    radial-gradient(ellipse at top left, var(--accent-muted) 0%, transparent 50%),
    var(--bg-primary);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
}

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

.login-logo {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-2xl);
  color: var(--text-inverse);
  margin: 0 auto var(--spacing-lg);
}

.login-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.login-subtitle {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.login-form .btn-primary {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  margin-top: var(--spacing-md);
}

.login-error {
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid var(--status-error);
  color: var(--status-error);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
  display: none;
}

.login-error.show {
  display: block;
}

/* ==========================================================================
   Bulk Actions Bar
   ========================================================================== */
.bulk-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.bulk-actions .selection-info {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.bulk-actions .selection-count {
  color: var(--accent);
  font-weight: 600;
}

/* ==========================================================================
   Loading States
   ========================================================================== */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

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

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

/* ==========================================================================
   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; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
  .header {
    padding: 0 var(--spacing-md);
  }
  
  .header-nav {
    display: none;
  }
  
  .main-content {
    padding: var(--spacing-md);
  }
  
  .pipeline {
    flex-direction: column;
  }
  
  .filters-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .data-table {
    display: block;
    overflow-x: auto;
  }
}