/* ==========================================
   GuardX Design System — dark cybersecurity theme
   Shared by: dashboard.php, protection.php, waf_protection.php,
              analytics.php, settings.php, billing.php
   Pairs with css/mobile-responsive.css (same class names below
   are what that stylesheet already targets — link both from
   includes/head.php, don't duplicate the breakpoints here).
   ========================================== */

:root {
  /* Surfaces (same base as login.php/sign-up.php, extended) */
  --bg-dark: #020617;
  --bg-card: #0F172A;
  --bg-elevated: #131f37;
  --bg-hover: rgba(148, 163, 184, 0.06);

  /* Accent — cyan/blue security-tool accent, replaces the old mint-green */
  --primary: #22d3ee;
  --primary-hover: #06b6d4;
  --primary-dim: rgba(34, 211, 238, 0.12);
  --accent-blue: #3b82f6;

  /* Status colors */
  --success: #22c55e;
  --success-dim: rgba(34, 197, 94, 0.12);
  --warning: #f59e0b;
  --warning-dim: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-dim: rgba(239, 68, 68, 0.12);
  --neutral: #64748b;
  --neutral-dim: rgba(100, 116, 139, 0.12);
  --accent-red: #ef4444; /* kept for backward compatibility with existing inline styles */

  /* Text */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-faint: #64748b;

  /* Borders / shadows */
  --border: rgba(148, 163, 184, 0.1);
  --border-strong: rgba(148, 163, 184, 0.2);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.25);
  --shadow-elevated: 0 20px 50px rgba(0, 0, 0, 0.35);

  /* Typography (fonts already loaded via CDN in includes/head.php) */
  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Layout */
  --sidebar-width: 260px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  margin: 0;
  line-height: 1.6; /* same as analytics.php, so every page and the menu look identical */
}

a { color: inherit; }
code, pre, .mono { font-family: var(--font-mono); }

/* ==========================================
   App shell
   ========================================== */
.app-shell {
  display: flex;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 0%, #0b1830 0%, var(--bg-dark) 55%);
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 2rem 2.5rem;
  width: calc(100% - var(--sidebar-width));
  min-width: 0;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.top-bar h1 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0;
}

.top-bar p.subtitle {
  color: var(--text-muted);
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
}

.top-actions, .top-bar-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ==========================================
   Sidebar
   ========================================== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform 0.25s ease;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1.5rem 1.5rem 1.25rem;
  font-weight: 700;
  font-size: 1.15rem;
  border-bottom: 1px solid var(--border);
}

.nav-menu {
  list-style: none;
  margin: 0;
  padding: 1rem 0.75rem;
  flex: 1;
  overflow-y: auto;
}

.nav-item { margin-bottom: 0.25rem; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
  cursor: pointer;
}

.nav-link .nav-link-content {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-link i { font-size: 1.05rem; width: 1.1rem; text-align: center; }

.nav-link:hover { background: var(--bg-hover); color: var(--text-main); }

.nav-link.active {
  background: var(--primary-dim);
  color: var(--primary);
}

.nav-link-lang {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 0.9rem;
  color: var(--text-muted);
}

.nav-link-lang select {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  cursor: pointer;
  outline: none;
}
.nav-link-lang select option { background: var(--bg-card); color: var(--text-main); }

.user-section {
  padding: 1rem 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
}

.user-info { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.9rem; }

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-dim);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.user-details h4, .user-name {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}
.user-details p, .user-email {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  transition: 0.15s ease;
}
.logout-btn:hover { border-color: var(--danger); color: var(--danger); }

.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1001;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  color: var(--text-main);
  cursor: pointer;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.mobile-overlay.active { opacity: 1; }

/* ==========================================
   Stat cards / KPI tiles
   ========================================== */
.stat-grid, .stats-grid, .stats-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--primary-dim);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.stat-title, .stat-label {
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-trend { font-size: 0.8rem; color: var(--text-muted); }
.stat-trend.up { color: var(--success); }
.stat-trend.down { color: var(--danger); }

/* ==========================================
   Cards / panels
   ========================================== */
.card, .panel, .settings-card, .plan-card, .chart-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.section-header h2 { font-size: 1.15rem; margin: 0; }

/* ==========================================
   Tables
   ========================================== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.data-table th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
}
.data-table tbody tr:hover { background: var(--bg-hover); }

/* ==========================================
   Badges / status pills
   ========================================== */
.badge, .status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge.success, .status-pill.success { background: var(--success-dim); color: var(--success); }
.badge.warning, .status-pill.warning { background: var(--warning-dim); color: var(--warning); }
.badge.danger, .status-pill.danger { background: var(--danger-dim); color: var(--danger); }
.badge.info, .status-pill.info { background: var(--primary-dim); color: var(--primary); }
.badge.neutral, .status-pill.neutral { background: var(--neutral-dim); color: var(--neutral); }

/* ==========================================
   Buttons
   ========================================== */
.btn, .btn-primary, .btn-secondary, .btn-danger, .btn-ghost, .btn-small {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: 0.15s ease;
}
.btn-primary { background: var(--primary); color: #04141a; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: transparent; border-color: var(--border-strong); color: var(--text-main); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger-dim); color: var(--danger); border-color: transparent; }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text-main); }
.btn-small { padding: 0.45rem 0.8rem; font-size: 0.8rem; }
.btn:disabled, .btn-primary:disabled, .btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }

/* ==========================================
   Forms
   ========================================== */
.form-group { margin-bottom: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-label, .form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
}
.form-control {
  width: 100%;
  padding: 0.75rem 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: 0.15s ease;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-dim);
}
select, .form-control select, select.form-control {
  background-color: var(--bg-elevated);
  color: var(--text-main);
  color-scheme: dark;
}
select option, .form-control option {
  background: var(--bg-card);
  color: var(--text-main);
}
.form-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }

/* ==========================================
   Modal
   ========================================== */
.modal, .modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal.active, .modal-overlay.active { display: flex; }
.modal-content {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-elevated);
}

/* ==========================================
   Toasts
   ========================================== */
.toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  min-width: 260px;
  box-shadow: var(--shadow-card);
  font-size: 0.87rem;
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

/* ==========================================
   Empty state
   ========================================== */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}
.empty-state i { font-size: 2rem; color: var(--text-faint); margin-bottom: 1rem; display: block; }

/* ==========================================
   Responsive — sidebar collapse
   Detailed per-page breakpoint rules live in
   css/mobile-responsive.css (linked alongside this file);
   this covers the base shell collapse only.
   ========================================== */
@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
  .mobile-overlay { display: block; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.mobile-open { transform: translateX(0); box-shadow: var(--shadow-elevated); }
  .main-content {
    margin-left: 0;
    width: 100%;
    padding: 1rem;
    padding-top: 5rem;
  }
  .form-row { grid-template-columns: 1fr; }
}