/* ==========================================================================
   1. CSS Variables & Root Configuration
   ========================================================================== */

:root {
    /* Typography */
    --font-primary: 'Roboto', sans-serif;
    --font-headings: 'Archivo Black', sans-serif;
    --text-base-size: 1rem;
    --text-scale-ratio: 1.2;
    --text-sm: calc(var(--text-base-size) / var(--text-scale-ratio));
    --text-md: calc(var(--text-base-size) * var(--text-scale-ratio));
    --text-lg: calc(var(--text-md) * var(--text-scale-ratio));
    --text-xl: calc(var(--text-lg) * var(--text-scale-ratio));
    --text-xxl: calc(var(--text-xl) * var(--text-scale-ratio));

    /* Colors */
    --color-primary: #8e44ad;
    --color-secondary: #3498db;
    --color-accent: #1abc9c;
    --color-accent-dark: #16a085;
    --color-text: #ecf0f1;
    --color-text-dark: #34495e;
    --color-bg-dark: #2c3e50;
    --color-white: #ffffff;
    --color-black: #000000;
    --color-border: rgba(255, 255, 255, 0.2);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;

    /* Borders & Shadows */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);

    /* Transitions */
    --transition-bouncy: cubic-bezier(0.68, -0.55, 0.27, 1.55);
    --transition-duration: 0.4s;
}


/* ==========================================================================
   2. Base & Global Styles
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-dark);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.page-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
    background-size: cover;
    background-repeat: no-repeat;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-duration) ease;
}

a:hover {
    color: var(--color-accent-dark);
}

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

h1, h2, h3, h4 {
    font-family: var(--font-headings);
    color: var(--color-white);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.2;
}

h1 { font-size: var(--text-xxl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-md); }

p {
    margin-bottom: var(--spacing-sm);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
    text-shadow: 2px 2px 5px rgba(0,0,0,0.3);
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg) auto;
    font-size: var(--text-md);
    color: var(--color-text);
    opacity: 0.9;
}


/* ==========================================================================
   3. Animations & Transitions (Barba.js & Scroll)
   ========================================================================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* ==========================================================================
   4. Reusable Components
   ========================================================================== */

/* Buttons */
.cta-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-headings);
    font-size: var(--text-base-size);
    color: var(--color-white);
    background: linear-gradient(45deg, var(--color-accent), var(--color-secondary));
    border: none;
    border-radius: 50px;
    text-transform: uppercase;
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition-duration) var(--transition-bouncy), box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: scale(1.05) translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.cta-button.secondary {
    background: transparent;
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
}

/* Glassmorphism Cards */
.glassmorphism-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-md);
    height: 100%;
    transition: transform var(--transition-duration) var(--transition-bouncy);
}

.glassmorphism-card:hover {
    transform: translateY(-10px);
}

/* Base Card Styles */
.card {
    display: flex;
    flex-direction: column;
    text-align: center;
    overflow: hidden;
    height: 100%;
}
.card-image {
    width: 100%;
    aspect-ratio: 3 / 2;
    margin-bottom: var(--spacing-md);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
}

.card-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: center;
}

.card-content h3, .card-content h4 {
    margin-bottom: var(--spacing-sm);
}

/* ==========================================================================
   5. Header & Navigation
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: rgba(44, 62, 80, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: padding 0.3s ease;
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-headings);
    font-size: var(--text-lg);
    color: var(--color-white);
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-duration) ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-duration) ease-out;
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--color-white);
}

.nav-links a:hover::after,
.nav-links a:focus::after {
    transform: scaleX(1);
    transform-origin: left;
}

.burger-menu {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.burger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-white);
    margin: 5px 0;
    transition: all 0.3s ease-in-out;
}

/* ==========================================================================
   6. Section Styles
   ========================================================================== */

/* Hero Section */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 90vh;
    padding: var(--spacing-xl) 0;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.hero-content p {
    font-size: var(--text-md);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

/* Instructors Section */
.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.image-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm);
    align-items: center; /* STROGO */
}
.image-card .card-image {
    border-radius: 50%;
    width: 150px;
    height: 150px;
    aspect-ratio: 1/1;
    margin: 0 auto var(--spacing-md) auto; /* STROGO */
}

.image-card .card-image img {
    border-radius: 50%;
}
.image-card .card-content {
    padding: 0 var(--spacing-sm) var(--spacing-sm) var(--spacing-sm);
}

.image-card h4 { color: var(--color-accent); }
.image-card p { font-size: var(--text-sm); opacity: 0.8; }

/* Success Stories Section */
.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}
.stories-grid .card-content {
    text-align: left;
}
blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-md);
    margin: 0 0 var(--spacing-md) 0;
    font-style: italic;
    font-size: var(--text-md);
}
cite {
    display: block;
    text-align: right;
    font-weight: bold;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}
.stat-widget {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    text-align: center;
}
.stat-value {
    display: block;
    font-family: var(--font-headings);
    font-size: var(--text-xl);
    color: var(--color-white);
}
.stat-label {
    font-size: var(--text-sm);
    text-transform: uppercase;
    opacity: 0.8;
}

/* Events Section */
.events-list {
    display: grid;
    gap: var(--spacing-lg);
}
.event-item {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

/* Community Section */
#community {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--color-white);
}

#community .section-title, #community p {
    color: var(--color-white);
}

.stats-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
}
.stat-widget-large {
    text-align: center;
}
.stat-widget-large .stat-value {
    font-size: var(--text-xxl);
}

/* Media Section */
.resources-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}
.resource-item {
    display: block;
    color: var(--color-text);
}
.resource-item h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}
.resource-item p {
    opacity: 0.8;
    font-size: var(--text-sm);
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-lg);
}
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}
.form-group input,
.form-group textarea {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: var(--text-base-size);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(26, 188, 156, 0.3);
}

/* ==========================================================================
   7. Footer
   ========================================================================== */

.site-footer {
    background-color: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    font-size: var(--text-sm);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}
.footer-about, .footer-links, .footer-social {
    padding: 0 var(--spacing-sm);
}
.footer-grid h4 {
    font-size: var(--text-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}
.footer-grid ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-grid ul li {
    margin-bottom: var(--spacing-xs);
}
.footer-grid ul a {
    color: var(--color-text);
    opacity: 0.8;
    transition: opacity 0.3s ease, color 0.3s ease;
}
.footer-grid ul a:hover {
    opacity: 1;
    color: var(--color-accent);
}
.footer-copyright {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    opacity: 0.7;
}

/* ==========================================================================
   8. Specific Page Styles
   ========================================================================== */

/* Success Page */
.success-page-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    padding: var(--spacing-lg);
}
.success-card {
    max-width: 600px;
}

/* Privacy & Terms Pages */
.static-page-container {
    padding-top: 120px; /* Space for sticky header */
    padding-bottom: var(--spacing-xl);
}
.static-page-content {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
}
.static-page-content h1, .static-page-content h2 {
    color: var(--color-accent);
}


/* ==========================================================================
   9. Media Queries for Responsiveness
   ========================================================================== */
@media (min-width: 769px) {
    .contact-wrapper {
        grid-template-columns: 1fr 1.5fr;
        align-items: center;
    }
}


@media (max-width: 768px) {
    h1 { font-size: calc(var(--text-xxl) * 0.8); }
    h2 { font-size: calc(var(--text-xl) * 0.9); }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 70%;
        height: 100vh;
        background: var(--color-bg-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateX(100%);
        transition: transform 0.4s ease-in-out;
        z-index: 1000;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .burger-menu {
        display: block;
    }
    
    .burger-menu.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .burger-menu.active span:nth-child(2) {
        opacity: 0;
    }

    .burger-menu.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-section {
        min-height: 70vh;
    }
}