/*
 * Base styles - CSS variables, body, and navbar.
 * This file contains foundational styles and theming variables.
 */

/* =============================================================================
   Self-hosted Fonts
   ============================================================================= */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-var.8e433c0592f7.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-var.33d0fc2ba586.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

/* =============================================================================
   CSS Custom Properties (Variables)
   ============================================================================= */

:root {
  /* Primary accent — deep royal blue */
  --primary-color: #2563EB;
  --secondary-color: #1E40AF;
  --accent-light: #3B82F6;
  --primary-gradient: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
  --primary-gradient-45: linear-gradient(45deg, #2563EB 0%, #1E40AF 100%);

  /* Neutral surfaces — cool light */
  --body-bg: #f5f7fb;
  --card-bg: #ffffff;
  --surface-light: #f1f5fb;
  --surface-lighter: #e9eef7;
  --border-color: #e3e8f0;
  --border-color-dark: #d3dae6;

  /* Text */
  --text-primary: #1e293b;
  --text-secondary: #64748b;

  /* Navbar */
  --navbar-bg: #ffffff;
  --navbar-border: #e3e8f0;
  --navbar-brand-color: #1e293b;
  --navbar-brand-icon: #2563EB;
  --navbar-link-color: #64748b;
  --navbar-link-hover-color: #1e293b;
  --navbar-link-hover-bg: rgba(0, 0, 0, 0.04);
  --navbar-link-active-color: #2563EB;
  --navbar-link-active-bg: rgba(37, 99, 235, 0.10);
  --navbar-btn-border: rgba(0, 0, 0, 0.1);
  --navbar-username-color: #94a3b8;
  --navbar-toggler-stroke: rgba(30, 41, 59, 0.7);

  /* Input colors */
  --input-bg: #ffffff;
  --input-border: #e3e8f0;
  --input-text: #1e293b;

  /* Status colors */
  --success-color: #16a34a;
  --danger-color: #dc2626;
  --warning-color: #d97706;
  --warning-highlight: #fef3c7;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.10), 0 4px 8px rgba(0, 0, 0, 0.06);

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.2s ease-in-out;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

/* =============================================================================
   Dark Mode Variables — deep navy-black surfaces, equal polish
   ============================================================================= */

[data-theme="dark"] {
  --body-bg: #0b1220;
  --card-bg: #131c2e;
  --surface-light: #172234;
  --surface-lighter: #1e2b42;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-dark: rgba(255, 255, 255, 0.14);
  --text-primary: #e6edf7;
  --text-secondary: #9fb0c8;

  --input-bg: #172234;
  --input-border: rgba(255, 255, 255, 0.1);
  --input-text: #e6edf7;

  --warning-highlight: #2d1f00;

  --navbar-bg: #0b1220;
  --navbar-border: rgba(255, 255, 255, 0.07);
  --navbar-brand-color: #e6edf7;
  --navbar-brand-icon: #60A5FA;
  --navbar-link-color: #9fb0c8;
  --navbar-link-hover-color: #e6edf7;
  --navbar-link-hover-bg: rgba(255, 255, 255, 0.07);
  --navbar-link-active-color: #60A5FA;
  --navbar-link-active-bg: rgba(59, 130, 246, 0.16);
  --navbar-btn-border: rgba(255, 255, 255, 0.12);
  --navbar-username-color: #64748b;
  --navbar-toggler-stroke: rgba(159, 176, 200, 0.9);

  --success-color: #4ade80;
  --danger-color: #f87171;
  --warning-color: #fbbf24;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.6), 0 4px 8px rgba(0, 0, 0, 0.4);
}

/* =============================================================================
   Body Styles
   ============================================================================= */

body {
  background-color: var(--body-bg);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out;
}

/* Tabular numbers for all data/time displays */
.table,
.badge,
.badge-soft,
.metric-value,
.performance-delta,
.clickable-duration {
  font-variant-numeric: tabular-nums;
}

/* =============================================================================
   Navbar Styles
   ============================================================================= */

.navbar-modern {
  background: var(--navbar-bg) !important;
  border: none !important;
  border-bottom: 1px solid var(--navbar-border);
  box-shadow: var(--shadow-sm);
  padding: 0.625rem 0;
  transition: background-color 0.2s ease-in-out, border-color 0.2s ease-in-out;
}

.navbar-brand-modern {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--navbar-brand-color) !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.navbar-brand-modern img,
.navbar-brand-modern .brand-logo {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.navbar-brand-modern .bi {
  color: var(--navbar-brand-icon);
  font-size: 1.15rem;
}

.navbar-brand-modern:hover {
  opacity: 0.85;
}

.navbar-nav .nav-link {
  color: var(--navbar-link-color) !important;
  font-weight: 500;
  padding: 0.375rem 0.875rem !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin: 0 0.1rem;
  font-size: 0.875rem;
}

.navbar-nav .nav-link:hover {
  color: var(--navbar-link-hover-color) !important;
  background-color: var(--navbar-link-hover-bg);
}

.navbar-nav .nav-link.active {
  color: var(--navbar-link-active-color) !important;
  background-color: var(--navbar-link-active-bg);
  font-weight: 600;
}

/* Navbar buttons */
.btn-nav-login {
  background: var(--navbar-link-active-bg);
  border: 1px solid var(--navbar-link-active-color);
  color: var(--navbar-link-active-color);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-nav-login:hover {
  background: var(--navbar-link-active-color);
  color: white;
  transform: translateY(-1px);
}

.btn-logout {
  background: transparent;
  border: 1px solid var(--navbar-btn-border);
  color: var(--navbar-link-color);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-logout:hover {
  background: var(--navbar-link-hover-bg);
  border-color: var(--navbar-link-hover-color);
  color: var(--navbar-link-hover-color);
  transform: translateY(-1px);
}

/* Username display */
.navbar-username {
  color: var(--navbar-username-color);
  font-size: 0.875rem;
}

/* Navbar toggler (mobile) */
.navbar-toggler {
  border: 1px solid var(--navbar-btn-border);
  padding: 0.375rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

/* Toggler icon — SVG data URIs can't use CSS vars */
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2830, 41, 59, 0.7%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28159, 176, 200, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Theme toggle button */
.btn-theme-toggle {
  background: transparent;
  border: 1px solid var(--navbar-btn-border);
  color: var(--navbar-link-color);
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  padding: 0;
  flex-shrink: 0;
}

.btn-theme-toggle:hover {
  background: var(--navbar-link-hover-bg);
  color: var(--navbar-brand-icon);
}

/* Main container */
.container-main {
  padding-top: 1rem;
  min-height: calc(100vh - 80px);
}

/* Nav icon */
.nav-icon {
  width: 1rem;
  height: 1rem;
  margin-right: 0.5rem;
}

/* =============================================================================
   Navbar Mobile Responsive
   ============================================================================= */

@media (max-width: 991.98px) {
  .navbar-nav {
    padding-top: 0.75rem;
    border-top: 1px solid var(--navbar-border);
    margin-top: 0.75rem;
  }

  .navbar-nav .nav-link {
    padding: 0.6rem 1rem !important;
    margin: 0.1rem 0;
  }

  .auth-buttons {
    padding-top: 0.75rem;
    border-top: 1px solid var(--navbar-border);
    margin-top: 0.75rem;
  }
}