/* ============================================
   INFINITY AI ACADEMY — STYLES
   Theme: Futuristic Oceanographic Campus
   Language: Russian (UI)
   Target: United States
   ============================================ */

/* 1. CSS Variables & Base Settings
   ============================================ */
:root {
    --color-bg: #020c1b;
    --color-surface: #0a192f;
    --color-surface-light: rgba(16, 33, 60, 0.6);
    --color-accent: #00f3ff;
    --accent-secondary: #64ffda;
    --accent-glow: rgba(0, 243, 255, 0.35);
    --text-primary: #e6f1ff;
    --text-secondary: #8892b0;
    --text-muted: #546681;
    --border-glass: rgba(100, 255, 218, 0.2);
    --glass-bg: rgba(10, 25, 47, 0.65);
    --font-body: 'Exo 2', sans-serif;
    --font-display: 'Orbitron', sans-serif;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

/* Typography helpers */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

a {
    color: var(--accent-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

img, svg {
    display: block;
    max-width: 100%;
}

/* 2. Layout Utilities
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 120px 0;
    position: relative;
}

.section__header {
    text-align: center;
    margin-bottom: 64px;
}

.section__title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    color: var(--text-primary);
    margin-bottom: 16px;
    text-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
}

.section__line {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    margin: 0 auto 20px;
    border-radius: 3px;
}

.section__subtitle {
    max-width: 640px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(2, 12, 27, 0.5);
}

/* 3. Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    padding: 20px 0;
    transition: all var(--transition-base);
    border-bottom: 1px solid transparent;
}

.header--scrolled {
    background: rgba(2, 12, 27, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--border-glass);
    padding: 14px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--text-primary);
}

.logo__icon {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
    filter: drop-shadow(0 0 6px var(--accent-glow));
}

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

/* Nav */
.nav__list {
    display: flex;
    gap: 36px;
    list-style: none;
}

.nav__link {
    position: relative;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
    box-shadow: 0 0 8px var(--accent-glow);
}

.nav__link:hover {
    color: var(--color-accent);
}

.nav__link:hover::after {
    width: 100%;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    cursor: pointer;
    position: relative;
    z-index: 1001;
}

.nav-toggle__bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
    transition: all 0.3s ease;
    margin: 0 auto;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* 4. Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: radial-gradient(circle at 50% 120%, #0f3b4f 0%, #061c2b 40%, #020c1b 80%);
}

.hero__canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(2, 12, 27, 0.3) 0%, rgba(2, 12, 27, 0.85) 100%);
    z-index: 2;
}

.hero__content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
}

.hero__badge {
    display: inline-block;
    border: 1px solid var(--border-glass);
    color: var(--accent-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 8px 20px;
    border-radius: 100px;
    margin-bottom: 24px;
    background: rgba(100, 255, 218, 0.05);
    backdrop-filter: blur(4px);
}

.hero__title {
    font-size: clamp(2rem, 6vw, 4rem);
    margin-bottom: 24px;
    line-height: 1.1;
    background: linear-gradient(180deg, #fff 0%, #a5f3fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__subtitle {
    font-size: clamp(1rem, 2.2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: 8px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.15), rgba(100, 255, 218, 0.05));
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.1), inset 0 0 10px rgba(0, 243, 255, 0.05);
}

.btn--primary:hover {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.3), rgba(100, 255, 218, 0.15));
    box-shadow: 0 0 40px rgba(0, 243, 255, 0.3), inset 0 0 20px rgba(0, 243, 255, 0.1);
    transform: translateY(-2px);
}

.btn--glow::before {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    background: linear-gradient(45deg, var(--color-accent), transparent, var(--accent-secondary));
    z-index: -1;
    border-radius: inherit;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn--glow:hover::before {
    opacity: 0.5;
}

/* Scroll Indicator */
.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero__scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

/* 5. About Section
   ============================================ */
.about__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 32px;
    align-items: center;
}

.about__card {
    padding: 48px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about__text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about__text strong {
    color: var(--color-accent);
}

/* Hologram ornament */
.about__visual {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 8px;
}

.hologram {
    position: relative;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hologram__ring {
    position: absolute;
    inset: 0;
    border: 2px solid var(--border-glass);
    border-radius: 50%;
    animation: hologramSpin 6s linear infinite;
    box-shadow: 0 0 20px var(--accent-glow);
}

.hologram__core {
    width: 40px;
    height: 40px;
    background: radial-gradient(circle, var(--accent-secondary), var(--color-accent));
    border-radius: 50%;
    box-shadow: 0 0 30px var(--accent-glow);
    animation: pulseCore 3s ease-in-out infinite;
}

.hologram__label {
    position: absolute;
    bottom: -24px;
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
}

.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 40px;
}

.stat {
    text-align: center;
}

.stat__value {
    font-family: var(--font-display);
    font-size: 2.2rem;
    color: var(--color-accent);
    text-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
    line-height: 1;
}

.stat__label {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* 6. Programs Section
   ============================================ */
.programs {
    background: linear-gradient(180deg, var(--color-bg) 0%, rgba(10, 50, 70, 0.2) 50%, var(--color-bg) 100%);
}

.programs__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.program-card {
    padding: 40px 32px;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--accent-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.program-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 243, 255, 0.1);
    border-color: rgba(0, 243, 255, 0.5);
}

.program-card:hover::before {
    transform: scaleX(1);
}

.program-card__icon {
    width: 52px;
    height: 52px;
    color: var(--color-accent);
    margin-bottom: 24px;
    filter: drop-shadow(0 0 6px var(--accent-glow));
}

.program-card__title {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.program-card__desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.program-card__meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-top: 1px solid var(--border-glass);
    padding-top: 16px;
}

/* 7. Laboratory Section
   ============================================ */
.lab__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.lab-card {
    padding: 32px;
    transition: all var(--transition-base);
    position: relative;
}

.lab-card:hover {
    border-color: rgba(0, 243, 255, 0.4);
    box-shadow: 0 12px 40px rgba(2, 20, 40, 0.6);
}

.lab-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.lab-card__id {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

.lab-card__status {
    color: var(--accent-secondary);
    font-size: 0.8rem;
    text-shadow: 0 0 10px var(--accent-secondary);
    animation: pulseStatus 2s infinite;
}

.lab-card__title {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.lab-card__desc {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 20px;
}

.lab-card__chart {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 60px;
    margin-bottom: 16px;
}

.bar {
    flex: 1;
    background: linear-gradient(to top, var(--accent-secondary), var(--color-accent));
    border-radius: 3px 3px 0 0;
    height: var(--value);
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.lab-card:hover .bar {
    opacity: 1;
}

.lab-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-glass);
    padding-top: 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.lab-card__value {
    font-family: var(--font-display);
    color: var(--color-accent);
    font-size: 1.1rem;
}

/* 8. Contact Section
   ============================================ */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
    align-items: stretch;
}

.contact__info {
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 32px;
}

.contact__item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact__icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--color-accent);
    background: rgba(0, 243, 255, 0.08);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 12px rgba(0, 243, 255, 0.05);
}

.contact__label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact__value {
    font-size: 1.05rem;
    color: var(--text-primary);
    font-style: normal;
    word-break: break-word;
}

.contact__map {
    padding: 8px;
    overflow: hidden;
}

.map-frame {
    width: 100%;
    height: 100%;
    min-height: 320px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.map-frame iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    filter: grayscale(40%) contrast(1.1) brightness(0.9) sepia(0.2) hue-rotate(160deg);
    opacity: 0.85;
    transition: filter var(--transition-base), opacity var(--transition-base);
}

.map-frame:hover iframe {
    filter: none;
    opacity: 1;
}

/* 9. Footer
   ============================================ */
.footer {
    border-top: 1px solid var(--border-glass);
    background: rgba(2, 12, 27, 0.8);
    padding: 40px 0;
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.footer__copy {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.footer__links {
    display: flex;
    gap: 28px;
}

.footer__links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

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

/* 10. Animations
   ============================================ */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

[data-animate="fade-right"] {
    transform: translateX(-40px);
}

[data-animate="fade-right"].is-visible {
    transform: translateX(0);
}

[data-animate="fade-left"] {
    transform: translateX(40px);
}

[data-animate="fade-left"].is-visible {
    transform: translateX(0);
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
    50% { opacity: 1; transform: scaleY(1); }
}

@keyframes hologramSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulseCore {
    0%, 100% { transform: scale(1); opacity: 0.9; }
    50% { transform: scale(1.15); opacity: 1; }
}

@keyframes pulseStatus {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* 11. Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .programs__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .lab__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about__grid {
        grid-template-columns: 1fr;
    }
    .about__stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }
    
    .nav__list {
        position: fixed;
        inset: 0 0 0 30%;
        background: rgba(2, 12, 27, 0.97);
        backdrop-filter: blur(16px);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 40px;
        gap: 24px;
        transform: translateX(100%);
        transition: transform 0.4s ease;
        border-left: 1px solid var(--border-glass);
        z-index: 1000;
    }
    
    .nav__list.is-open {
        transform: translateX(0);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero__title {
        font-size: 2.2rem;
    }
    
    .programs__grid,
    .lab__grid,
    .contact__grid {
        grid-template-columns: 1fr;
    }
    
    .about__stats {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer__container {
        flex-direction: column;
        text-align: center;
    }
    
    .map-frame {
        min-height: 260px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .about__card,
    .contact__info {
        padding: 32px 24px;
    }
    
    .stat__value {
        font-size: 1.6rem;
    }
}