/* --- Base Styles & Variables --- */
:root {
    --bs-dark: #000000;
    --bs-dark-rgb: 0, 0, 0;
    --bs-body-bg: #000000;
    --bs-body-color: #ffffff;
    --bs-border-color-translucent: rgba(255, 255, 255, 0.15);
    --accent-color: #00A3FF; /* Яркий синий акцент */
    --accent-color-rgb: 0, 163, 255;
}

body {
    font-family: 'Poppins', sans-serif;
}

h1, h2, h3, h4, h5, h6, .display-1, .display-2, .display-3, .display-4, .display-5, .display-6, .navbar-brand {
    font-family: 'Syne', sans-serif;
}

.fw-bolder {
    font-weight: 800 !important;
}

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

/* --- Header & Navigation --- */
header {
    background: linear-gradient(to bottom, rgba(0,0,0,0.7), transparent);
}

.fullscreen-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.fullscreen-nav.active {
    opacity: 1;
    visibility: visible;
}
.fullscreen-nav .btn-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
}
.fullscreen-nav-link {
    font-family: 'Syne', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    text-transform: uppercase;
    text-decoration: none;
    color: #6c757d;
    margin: 0.5rem 0;
    transition: color 0.3s ease, transform 0.3s ease;
}
.fullscreen-nav-link:hover {
    color: white;
    transform: scale(1.05);
}
.fullscreen-nav-link.active {
    color: var(--accent-color);
}

/* --- Hero Section --- */
.hero-section {
    position: relative;
}
.video-bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}
.video-bg-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0.4) 0%, rgba(0,0,0,1) 90%);
}

/* --- Custom Components --- */
.info-card, .module-card, .testimonial-card {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 1rem;
    height: 100%;
    text-align: center;
}
.module-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-color);
}

.pricing-card {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    height: 100%;
    position: relative;
    overflow: hidden;
}
.pricing-card.pro {
    border-color: var(--accent-color);
}
.pricing-card .price {
    color: var(--accent-color);
}
.pro-badge {
    position: absolute;
    top: 1.5rem;
    right: -2.5rem;
    background-color: var(--accent-color);
    color: white;
    padding: 0.25rem 2rem;
    font-weight: bold;
    font-size: 0.8rem;
    transform: rotate(45deg);
}

.instructor-img {
    border: 5px solid rgba(255, 255, 255, 0.1);
}

/* --- Form Styles --- */
.form-control, .form-select {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    padding: 0.75rem 1rem;
}
.form-control:focus, .form-select:focus {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(var(--accent-color-rgb), 0.25);
}
.form-floating > label {
    color: #6c757d;
}

.accordion-item {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: .5rem !important;
    margin-bottom: 1rem;
}
.accordion-button {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
    font-size: 1.25rem;
}
.accordion-button:not(.collapsed) {
    background-color: var(--accent-color);
    color: white;
}
.accordion-body {
    background-color: transparent;
}

.prose-dark p {
    color: #adb5bd;
}
.prose-dark h2 {
    color: white;
}

.btn-accent {
    --bs-btn-color: #fff;
    --bs-btn-bg: var(--accent-color);
    --bs-btn-border-color: var(--accent-color);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: #0082cc;
    --bs-btn-hover-border-color: #007cbf;
    --bs-btn-focus-shadow-rgb: var(--accent-color-rgb);
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: #007cbf;
    --bs-btn-active-border-color: #0072b2;
    --bs-btn-disabled-color: #fff;
    --bs-btn-disabled-bg: var(--accent-color);
    --bs-btn-disabled-border-color: var(--accent-color);
}