/**
 * Main Stylesheet - Prod. by Лазарев
 * Custom styles on top of Bootstrap 5
 */

/* ============================================
   CSS Variables / Custom Properties
   ============================================ */
:root {
    --transition-normal: 0.3s ease;
}

/* ============================================
   Base Styles
   ============================================ */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

::selection {
    background-color: var(--primary-color);
    color: white;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
}

.display-1, .display-2, .display-3, .display-4, .display-5 {
    font-weight: 800;
}

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

/* Dark Theme overrides are in bootscore-child.css */

/* ============================================
   Preloader
   ============================================ */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bs-body-bg, #fff);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.dark-theme #preloader {
    background: var(--dark-bg);
}

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(108, 99, 255, 0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.25rem;
}

.navbar-brand .brand-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: 0.5rem 1rem !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Dark mode toggle */
.dark-mode-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-toggle:hover {
    background: var(--primary-color);
    color: white;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    border-radius: 0 !important;
    padding: 0.6rem 1rem !important;
}

.btn-primary, .btn-primary:hover, .btn-outline-primary:hover, .btn-outline-primary:active, .btn-outline-primary:focus, .btn-outline-primary.active, .btn-primary:active, .btn-primary:focus {
    color: #fff !important;
}

.btn-outline-primary:active, .btn-outline-primary:focus {
    background-color: var(--bs-primary);
}

.btn-secondary, .btn-secondary:hover, .btn-outline-secondary:hover, .btn-outline-secondary:active, .btn-outline-secondary:focus, .btn-outline-secondary.active, .btn-secondary:active, .btn-secondary:focus {
    color: #fff !important;
}

/* ============================================
   Cards
   ============================================ */
.card {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

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

/* ============================================
   Footer
   ============================================ */
footer {
    background: var(--dark-bg);
    color: var(--text-light);
}

footer a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-normal);
}

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

.social-link {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

/* ============================================
   Cookie Consent
   ============================================ */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--dark-bg);
    color: white;
    padding: 1rem;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    z-index: 9999;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
}

.cookie-consent.show {
    transform: translateY(0);
}

/* ============================================
   Animations
   ============================================ */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 768px) {
    .display-1 {
        font-size: 2.5rem;
    }
    
    .display-4 {
        font-size: 1.75rem;
    }
    
    .navbar-brand {
        font-size: 1rem;
    }
}

/* ============================================
   Utilities
   ============================================ */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.object-fit-cover {
    object-fit: cover;
}

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

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}