/* =========================================
 * Defence Bridge - Corporate Main CSS
 * ========================================= */

:root {
  /* Corporate Defense Palette */
  --color-primary: #243C98; /* Deep Navy */
  --color-primary-dark: #182865;
  --color-secondary: #4a5568; /* Slate Grey */
  --color-accent: #c5a059; /* Muted Gold/Bronze for premium feel */
  
  --color-bg-body: #f0f2f5;
  --color-bg-surface: #ffffff;
  --color-bg-dark: #1a202c;
  
  --color-text-main: #1a202c;
  --color-text-body: #2d3748;
  --color-text-muted: #718096;
  --color-text-light: #e2e8f0;
  
  --color-border: #cbd5e0;
  --color-border-light: #e2e8f0;

  /* Typography */
  --font-family-main: 'Canaro Book', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --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 - Tighter for corporate feel */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;

  /* Sharp Edges */
  --radius-sm: 2px;
  --radius-md: 2px;
  --radius-lg: 0px;
  
  /* Minimal Shadows, Strong Borders */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  
  --transition-base: all 0.2s ease-in-out;
}

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

body {
  font-family: var(--font-family-main);
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  background-color: var(--color-bg-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-base);
  font-weight: 600;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  font-weight: 700; /* Strong headings */
  line-height: 1.2;
  margin-bottom: var(--space-4);
  text-transform: uppercase; /* Corporate/Military feel */
  letter-spacing: 0.05em;
}

h1 { font-size: var(--font-size-3xl); border-bottom: 2px solid var(--color-accent); padding-bottom: 0.5rem; display: inline-block; }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }

p { margin-bottom: var(--space-4); }

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: var(--font-size-sm); }
.text-uppercase { text-transform: uppercase; }

/* Layout */
.container {
  width: 100%;
  max-width: 1440px; /* Increased width */
  margin: 0 auto;
  padding: 0 2rem;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.min-h-screen {
  min-height: 100vh;
}

/* Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  font-weight: 600;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-base);
  border: 1px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

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

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

.form-control {
  display: block;
  width: 100%;
  padding: 0.75rem;
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--color-text-main);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0, 43, 92, 0.1);
}

/* Cards */
.card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  transition: var(--transition-base);
}

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

/* Header specific */
header {
  background-color: var(--color-bg-surface);
  border-bottom: 3px solid var(--color-primary);
}

/* Footer specific */
footer {
  background-color: var(--color-primary);
  color: white;
}
footer a {
  color: var(--color-text-light);
}
footer a:hover {
  color: var(--color-accent);
}

/* Utilities */
.m-0 { margin: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.p-0 { padding: 0; }
.p-4 { padding: var(--space-4); }
.pt-4 { padding-top: var(--space-4); }
.pb-4 { padding-bottom: var(--space-4); }

.text-danger { color: #e53e3e; }
.text-success { color: #38a169; }
.text-warning { color: #d69e2e; }

/* Admin Layout */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 260px;
  background-color: var(--color-bg-surface);
  border-right: 1px solid var(--color-border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
}

.admin-content {
  flex: 1;
  margin-left: 260px;
  background-color: var(--color-bg-body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 21px 2rem;
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
}

.admin-page-body {
  padding: 2rem;
  flex: 1;
}

.admin-nav-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--color-text-body);
  border-radius: var(--radius-sm);
  margin-bottom: 0.25rem;
  font-weight: 500;
  transition: var(--transition-base);
}

.admin-nav-link:hover {
  background-color: var(--color-bg-body);
  color: var(--color-primary);
}

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