/* AI-inspired Dark Theme for Skoola */
:root {
    --primary-color: #4a90e2; /* A strong, friendly blue */
    --secondary-color: #50e3c2; /* A vibrant turquoise/mint for accents */
    --background-color: #1f2937; /* Dark cool gray */
    --surface-color: #374151; /* Slightly lighter gray for cards/surfaces */
    --text-primary: #f9fafb; /* Off-white for primary text */
    --text-secondary: #d1d5db; /* Lighter gray for secondary text */
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
}

/* General Components */
.navbar {
    background-color: var(--surface-color) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.5) !important;
}

.navbar-brand {
    color: var(--secondary-color) !important;
    font-weight: bold;
}

.nav-link {
    color: var(--text-secondary) !important;
}

.nav-link.active, .nav-link:hover {
    color: var(--secondary-color) !important;
}

.btn-primary-custom {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transition: opacity 0.3s ease;
}

.btn-primary-custom:hover {
    opacity: 0.9;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.btn-secondary-custom {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--background-color);
    font-weight: bold;
    transition: opacity 0.3s ease;
}

.btn-secondary-custom:hover {
    opacity: 0.9;
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--background-color);
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-secondary {
    color: var(--secondary-color) !important;
}

.card, .doc-card, .register-card {
    background-color: var(--surface-color) !important;
    border: 1px solid #4b5563;
    color: var(--text-primary);
}

h1, h2, h3, h4, h5, h6, .card-title, .text-emerald {
    color: var(--secondary-color) !important;
}

p, .lead, li, .card-text, body, .text-muted {
    color: var(--text-secondary) !important;
}

a {
    color: var(--primary-color);
}

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

.shadow-sm {
    box-shadow: 0 .125rem .25rem rgba(0,0,0,.3) !important;
}

.hero-section {
    background: linear-gradient(135deg, var(--background-color) 0%, #111827 100%);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}
.cta-section h2, .cta-section p, .cta-section .lead {
    color: white !important;
}

.stats-section {
    background-color: var(--surface-color);
}

.form-control {
    background-color: #374151;
    color: #f9fafb;
    border-color: #4b5563;
}

.form-control:focus {
    background-color: #374151;
    color: #f9fafb;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.25rem rgba(80, 227, 194, 0.25);
}

.bg-light {
    background-color: var(--surface-color) !important;
}

.bg-white {
    background-color: var(--surface-color) !important;
}

.border-0 {
    border: none !important;
}

.text-center .text-muted {
    color: var(--text-secondary) !important;
}

footer a.text-muted {
    color: var(--text-secondary) !important;
    transition: color 0.3s ease;
}

footer a.text-muted:hover {
    color: var(--secondary-color) !important;
}

/* Navbar Toggler Icon */
.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.1);
}

.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(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Page-specific Overrides */
.register-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.landing-page-hero {
     background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}