/**
 * Landing Page Styles
 * Material Design 3 стили для лендинг-страницы
 */

/* Hero Section */
.landing-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Фиолетовый градиент с fallback цветами для надежной загрузки */
    background: linear-gradient(135deg, 
        var(--md-sys-color-primary-container, #E8D5FF) 0%, 
        var(--md-sys-color-surface-container, #F3E8FF) 50%, 
        var(--md-sys-color-primary-container, #E8D5FF) 100%);
    /* Дополнительный фиолетовый фон на случай если переменные не загрузились */
    background-color: #E8D5FF;
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
    padding: var(--md-spacing-xxxl) var(--md-spacing-lg);
    position: relative;
    overflow: hidden;
    will-change: transform;
}

/* Темная тема для hero-секции */
html.theme-dark .landing-hero {
    background: linear-gradient(135deg, 
        var(--md-sys-color-primary-container, #4F378B) 0%, 
        var(--md-sys-color-surface-container, #211F26) 50%, 
        var(--md-sys-color-primary-container, #4F378B) 100%);
    background-color: #141218;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.landing-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(73, 80, 87, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(73, 80, 87, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 50% 20%, rgba(73, 80, 87, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 10% 10%, rgba(73, 80, 87, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 90% 30%, rgba(73, 80, 87, 0.1) 0%, transparent 30%);
    pointer-events: none;
    animation: heroBackgroundMove 20s ease-in-out infinite;
    z-index: 1;
}

.landing-hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        );
    pointer-events: none;
    animation: gridMove 30s linear infinite;
    opacity: 0.5;
}

@keyframes heroBackgroundMove {
    0%, 100% {
        transform: translate(0, 0) scale(1) rotate(0deg);
        opacity: 1;
    }
    25% {
        transform: translate(3%, 2%) scale(1.06) rotate(1deg);
        opacity: 0.95;
    }
    50% {
        transform: translate(-2%, 3%) scale(0.96) rotate(-1deg);
        opacity: 0.9;
    }
    75% {
        transform: translate(2%, -2%) scale(1.04) rotate(0.5deg);
        opacity: 0.95;
    }
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Wave effects */
.hero-waves {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150px;
    overflow: hidden;
    pointer-events: none;
    z-index: 2;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: var(--md-sys-color-surface-container);
    opacity: 0.3;
    border-radius: 50% 50% 0 0;
    animation: waveAnimation 8s ease-in-out infinite;
}

.hero-wave:nth-child(1) {
    animation-delay: 0s;
    opacity: 0.2;
}

.hero-wave:nth-child(2) {
    animation-delay: 2s;
    opacity: 0.15;
    animation-duration: 10s;
}

.hero-wave:nth-child(3) {
    animation-delay: 4s;
    opacity: 0.1;
    animation-duration: 12s;
}

@keyframes waveAnimation {
    0%, 100% {
        transform: translateX(-50%) translateY(0) scaleY(1);
        opacity: 0.3;
    }
    25% {
        transform: translateX(-50%) translateY(-15px) scaleY(1.05);
        opacity: 0.35;
    }
    50% {
        transform: translateX(-50%) translateY(-25px) scaleY(1.1);
        opacity: 0.4;
    }
    75% {
        transform: translateX(-50%) translateY(-15px) scaleY(1.05);
        opacity: 0.35;
    }
}

/* Floating particles */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: var(--md-sys-color-primary);
    opacity: 0.12;
    animation: float 20s infinite ease-in-out;
    filter: blur(1.5px);
    will-change: transform;
    transition: transform 0.3s ease-out, opacity 0.3s ease-out;
}

.particle::before {
    content: '';
    position: absolute;
    inset: -25px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--md-sys-color-primary), transparent);
    opacity: 0.4;
    animation: particleGlow 4s ease-in-out infinite;
    z-index: -1;
}

.particle::after {
    content: '';
    position: absolute;
    inset: -15px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent);
    opacity: 0.6;
    animation: particleShine 3s ease-in-out infinite;
    z-index: -1;
}

@keyframes particleGlow {
    0%, 100% {
        opacity: 0.3;
        transform: scale(0.9);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.3);
    }
}

@keyframes particleShine {
    0%, 100% {
        opacity: 0.4;
        transform: rotate(0deg) scale(1);
    }
    50% {
        opacity: 0.7;
        transform: rotate(180deg) scale(1.1);
    }
}

.particle:nth-child(1) {
    width: 80px;
    height: 80px;
    left: 10%;
    top: 20%;
    animation-delay: 0s;
    animation-duration: 22s;
}

.particle:nth-child(2) {
    width: 120px;
    height: 120px;
    left: 70%;
    top: 15%;
    animation-delay: 2s;
    animation-duration: 28s;
}

.particle:nth-child(3) {
    width: 60px;
    height: 60px;
    left: 40%;
    top: 30%;
    animation-delay: 4s;
    animation-duration: 20s;
}

.particle:nth-child(4) {
    width: 100px;
    height: 100px;
    left: 85%;
    top: 50%;
    animation-delay: 6s;
    animation-duration: 25s;
}

.particle:nth-child(5) {
    width: 50px;
    height: 50px;
    left: 25%;
    top: 60%;
    animation-delay: 8s;
    animation-duration: 18s;
}

.particle:nth-child(6) {
    width: 70px;
    height: 70px;
    left: 55%;
    top: 25%;
    animation-delay: 10s;
    animation-duration: 21s;
}

.particle:nth-child(7) {
    width: 90px;
    height: 90px;
    left: 15%;
    top: 65%;
    animation-delay: 12s;
    animation-duration: 26s;
}

@keyframes float {
    0% {
        transform: translateY(0) translateX(0) scale(1) rotate(0deg);
        opacity: 0.12;
    }
    20% {
        transform: translateY(-40px) translateX(30px) scale(1.15) rotate(90deg);
        opacity: 0.18;
    }
    40% {
        transform: translateY(-80px) translateX(-25px) scale(0.85) rotate(180deg);
        opacity: 0.22;
    }
    60% {
        transform: translateY(-50px) translateX(20px) scale(1.1) rotate(270deg);
        opacity: 0.18;
    }
    80% {
        transform: translateY(-20px) translateX(-15px) scale(0.95) rotate(360deg);
        opacity: 0.15;
    }
    100% {
        transform: translateY(0) translateX(0) scale(1) rotate(360deg);
        opacity: 0.12;
    }
}

.hero-content {
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 3;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out 0.3s forwards;
    will-change: opacity, transform;
}

.hero-content::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(73, 80, 87, 0.1), transparent);
    border-radius: 50%;
    filter: blur(40px);
    animation: contentGlow 4s ease-in-out infinite;
    z-index: -1;
}

@keyframes contentGlow {
    0%, 100% {
        opacity: 0.5;
        transform: translateX(-50%) scale(1);
    }
    33% {
        opacity: 0.65;
        transform: translateX(-50%) scale(1.1);
    }
    66% {
        opacity: 0.85;
        transform: translateX(-50%) scale(1.25);
    }
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-family: 'Syne', var(--md-font-family);
    font-size: var(--md-font-size-display-large);
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    margin: 0 0 var(--md-spacing-xl) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-spacing-lg);
    position: relative;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    letter-spacing: -0.02em;
}

/* Hero Logo */
.hero-logo {
    max-width: 320px;
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
    transition: all var(--md-duration-medium) var(--md-easing-standard);
}

/* Инверсия цвета для светлой темы (белый логотип становится темным) */
@media (prefers-color-scheme: light) {
    .hero-logo {
        filter: invert(1) drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
    }
}

/* Для явно установленной светлой темы */
[data-theme="light"] .hero-logo {
    filter: invert(1) drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

/* Для темной темы - без инверсии */
@media (prefers-color-scheme: dark) {
    .hero-logo {
        filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
    }
}

[data-theme="dark"] .hero-logo,
html.theme-dark .hero-logo {
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.hero-title .material-symbols-outlined {
    font-size: 3.5rem;
    color: var(--md-sys-color-primary);
    animation: iconPulse 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
    position: relative;
    display: inline-block;
}

.hero-title .material-symbols-outlined::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--md-sys-color-primary), transparent);
    opacity: 0.3;
    animation: iconGlow 2s ease-in-out infinite;
    z-index: -1;
    filter: blur(15px);
}

@keyframes iconGlow {
    0%, 100% {
        opacity: 0.25;
        transform: scale(0.95);
    }
    33% {
        opacity: 0.4;
        transform: scale(1.05);
    }
    66% {
        opacity: 0.55;
        transform: scale(1.15);
    }
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
    }
    25% {
        transform: scale(1.08) rotate(3deg);
        filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.2));
    }
    50% {
        transform: scale(1.12) rotate(5deg);
        filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.25));
    }
    75% {
        transform: scale(1.08) rotate(-3deg);
        filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.2));
    }
}

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--md-sys-color-primary), transparent);
    border-radius: 2px;
    animation: lineExpand 1.5s ease-out 0.8s forwards, linePulse 3s ease-in-out 2.3s infinite;
    opacity: 0;
    box-shadow: 0 0 10px var(--md-sys-color-primary);
}

@keyframes lineExpand {
    to {
        opacity: 1;
        width: 250px;
    }
}

@keyframes linePulse {
    0%, 100% {
        box-shadow: 0 0 10px var(--md-sys-color-primary);
        opacity: 1;
    }
    50% {
        box-shadow: 0 0 20px var(--md-sys-color-primary), 0 0 30px rgba(73, 80, 87, 0.3);
        opacity: 0.9;
    }
}

/* Decorative lines around title */
.hero-title::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -60px;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--md-sys-color-primary));
    border-radius: 1px;
    animation: lineSlideInLeft 1s ease-out 1s forwards;
    opacity: 0;
}

.hero-title .decorative-line {
    position: absolute;
    top: 50%;
    right: -60px;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--md-sys-color-primary), transparent);
    border-radius: 1px;
    animation: lineSlideInRight 1s ease-out 1s forwards;
    opacity: 0;
}

@keyframes lineSlideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 0.6;
        transform: translateX(0);
    }
}

@keyframes lineSlideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 0.6;
        transform: translateX(0);
    }
}

.hero-subtitle {
    font-family: 'Syne', var(--md-font-family);
    font-size: var(--md-font-size-headline-medium);
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin: 0 0 var(--md-spacing-lg) 0;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.5s forwards;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.05);
    letter-spacing: 0.01em;
}

.hero-description {
    font-size: var(--md-font-size-body-large);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.8;
    margin: 0 0 var(--md-spacing-xxxl) 0;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.7s forwards;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.03);
}

/* Hero CTA Button */
.hero-cta {
    margin-top: var(--md-spacing-xxl);
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.9s forwards;
}

.hero-cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-spacing-md);
    padding: var(--md-spacing-lg) var(--md-spacing-xxxl);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border: none;
    border-radius: var(--md-radius-lg);
    font-size: var(--md-font-size-body-large);
    font-weight: 600;
    font-family: 'Syne', var(--md-font-family);
    cursor: pointer;
    text-decoration: none;
    box-shadow: 
        0 4px 12px rgba(0, 0, 0, 0.15),
        0 0 20px rgba(73, 80, 87, 0.2);
    transition: all var(--md-duration-medium) var(--md-easing-standard);
    position: relative;
    overflow: hidden;
    animation: buttonGlow 3s ease-in-out infinite;
}

@keyframes buttonGlow {
    0%, 100% {
        box-shadow: 
            0 4px 12px rgba(0, 0, 0, 0.15),
            0 0 20px rgba(73, 80, 87, 0.2);
    }
    50% {
        box-shadow: 
            0 6px 16px rgba(0, 0, 0, 0.2),
            0 0 30px rgba(73, 80, 87, 0.35);
    }
}

.hero-cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.1), transparent);
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.hero-cta-button span {
    position: relative;
    z-index: 1;
}

.hero-cta-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.25),
        0 0 40px rgba(73, 80, 87, 0.4);
    animation: none;
}

.hero-cta-button:hover::before {
    width: 300px;
    height: 300px;
    transition: width 0.6s ease, height 0.6s ease;
}

.hero-cta-button:active {
    transform: translateY(-2px) scale(1.02);
}

.hero-cta-button .material-symbols-outlined {
    font-size: 1.5rem;
    animation: arrowBounce 2s ease-in-out infinite;
    transition: transform var(--md-duration-short) var(--md-easing-standard);
}

.hero-cta-button:hover .material-symbols-outlined {
    animation: none;
    transform: translateX(5px);
}

@keyframes arrowBounce {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(5px);
    }
}

/* Additional decorative elements */
.hero-content::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--md-sys-color-outline-variant), transparent);
    opacity: 0.5;
    animation: fadeIn 1s ease-out 1.2s forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 0.5;
    }
}

/* Hero CTA removed - auth button moved to top bar */

/* Container */
.landing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--md-spacing-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-spacing-sm);
    padding: var(--md-spacing-lg) var(--md-spacing-xxl);
    border-radius: var(--md-radius-md);
    font-size: var(--md-font-size-body-medium);
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--md-duration-medium) var(--md-easing-standard);
    font-family: var(--md-font-family);
}

.btn-primary {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    box-shadow: var(--md-elevation-2);
}

.btn-primary:hover {
    background: var(--md-sys-color-primary);
    box-shadow: var(--md-elevation-4);
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--md-spacing-xl) var(--md-spacing-xxxl);
    font-size: var(--md-font-size-body-large);
}

/* Section Styles */
.landing-features,
.landing-examples,
.landing-faq {
    padding: var(--md-spacing-xxxl) 0;
    background: var(--md-sys-color-surface);
    position: relative;
    overflow: hidden;
}

.landing-features {
    background: var(--md-sys-color-surface-container);
    position: relative;
}

.landing-features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(73, 80, 87, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(73, 80, 87, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.landing-features > .landing-container {
    position: relative;
    z-index: 1;
}

.landing-examples {
    background: linear-gradient(180deg, var(--md-sys-color-surface) 0%, var(--md-sys-color-surface-container-low) 100%);
    position: relative;
}

.landing-examples::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--md-sys-color-outline-variant), transparent);
}

.landing-examples > .landing-container {
    position: relative;
    z-index: 1;
}

.section-title {
    font-family: 'Syne', var(--md-font-family);
    font-size: var(--md-font-size-display-medium);
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    text-align: center;
    margin: 0 0 var(--md-spacing-md) 0;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--md-sys-color-primary);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.6s ease-out 0.3s, width 0.6s ease-out 0.3s;
}

.section-title.visible::after {
    opacity: 1;
    width: 120px;
}

.section-subtitle {
    font-size: var(--md-font-size-body-large);
    color: var(--md-sys-color-on-surface-variant);
    text-align: center;
    margin: 0 0 var(--md-spacing-xxxl) 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out 0.2s, transform 0.6s ease-out 0.2s;
}

.section-subtitle.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--md-spacing-xxl);
    margin-top: var(--md-spacing-xxxl);
}

.feature-card {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-radius-lg);
    padding: var(--md-spacing-xxl);
    box-shadow: var(--md-elevation-2);
    border: 1px solid var(--md-sys-color-outline-variant);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out, box-shadow var(--md-duration-medium) var(--md-easing-standard), border-color var(--md-duration-medium) var(--md-easing-standard);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    box-shadow: var(--md-elevation-4);
    transform: translateY(-8px) scale(1.02);
    border-color: var(--md-sys-color-primary);
}

.feature-card:nth-child(1) { transition-delay: 0.1s; }
.feature-card:nth-child(2) { transition-delay: 0.2s; }
.feature-card:nth-child(3) { transition-delay: 0.3s; }
.feature-card:nth-child(4) { transition-delay: 0.4s; }
.feature-card:nth-child(5) { transition-delay: 0.5s; }
.feature-card:nth-child(6) { transition-delay: 0.6s; }
.feature-card:nth-child(7) { transition-delay: 0.7s; }
.feature-card:nth-child(8) { transition-delay: 0.8s; }
.feature-card:nth-child(9) { transition-delay: 0.9s; }

.feature-icon {
    width: 4rem; /* 64px -> 4rem (кратно 8dp - MD3 стандарт) */
    height: 4rem; /* 64px -> 4rem (кратно 8dp - MD3 стандарт) */
    border-radius: var(--md-radius-md);
    background: var(--md-sys-color-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--md-spacing-xl);
    position: relative;
    transition: transform var(--md-duration-medium) var(--md-easing-standard);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: var(--md-radius-md);
    background: var(--md-sys-color-primary);
    opacity: 0;
    transition: opacity var(--md-duration-medium) var(--md-easing-standard);
    z-index: -1;
    filter: blur(8px);
}

.feature-card:hover .feature-icon::before {
    opacity: 0.3;
}

.feature-icon .material-symbols-outlined {
    font-size: 2rem;
    color: var(--md-sys-color-primary);
    transition: transform var(--md-duration-medium) var(--md-easing-standard);
}

.feature-card:hover .feature-icon .material-symbols-outlined {
    transform: scale(1.1);
}

.feature-title {
    font-family: 'Syne', var(--md-font-family);
    font-size: var(--md-font-size-title-large);
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin: 0 0 var(--md-spacing-lg) 0;
}

.feature-description {
    font-size: var(--md-font-size-body-medium);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
    margin: 0;
}

/* Examples Grid */
.examples-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--md-spacing-xxl);
    margin-top: var(--md-spacing-xxxl);
}

.example-card {
    background: var(--md-sys-color-surface-container);
    border-radius: var(--md-radius-lg);
    padding: var(--md-spacing-xxl);
    border: 1px solid var(--md-sys-color-outline-variant);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out, background var(--md-duration-medium) var(--md-easing-standard), box-shadow var(--md-duration-medium) var(--md-easing-standard);
}

.example-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.example-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--md-duration-medium) var(--md-easing-standard);
    pointer-events: none;
}

.example-card:hover::after {
    opacity: 1;
}

.example-card:hover {
    background: var(--md-sys-color-surface-container-high);
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--md-elevation-3);
}

.example-card:nth-child(1) { transition-delay: 0.1s; }
.example-card:nth-child(2) { transition-delay: 0.2s; }
.example-card:nth-child(3) { transition-delay: 0.3s; }
.example-card:nth-child(4) { transition-delay: 0.4s; }
.example-card:nth-child(5) { transition-delay: 0.5s; }

.example-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--md-radius-md);
    background: var(--md-sys-color-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--md-spacing-lg);
}

.example-icon i {
    font-size: 1.75rem;
    color: var(--md-sys-color-primary);
}

.example-title {
    font-family: 'Syne', var(--md-font-family);
    font-size: var(--md-font-size-title-medium);
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin: 0 0 var(--md-spacing-md) 0;
}

.example-description {
    font-size: var(--md-font-size-body-medium);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
    margin: 0;
}

/* FAQ Section */
.landing-faq {
    background: var(--md-sys-color-surface-container);
}

.faq-list {
    max-width: 800px;
    margin: var(--md-spacing-xxxl) auto 0;
}

.faq-item {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-radius-lg);
    padding: var(--md-spacing-xxl);
    margin-bottom: var(--md-spacing-lg);
    border: 1px solid var(--md-sys-color-outline-variant);
    box-shadow: var(--md-elevation-1);
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out, box-shadow var(--md-duration-medium) var(--md-easing-standard), border-color var(--md-duration-medium) var(--md-easing-standard);
}

.faq-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.faq-item:hover {
    box-shadow: var(--md-elevation-3);
    border-color: var(--md-sys-color-primary);
    transform: translateX(5px);
}

.faq-item:nth-child(1) { transition-delay: 0.1s; }
.faq-item:nth-child(2) { transition-delay: 0.2s; }
.faq-item:nth-child(3) { transition-delay: 0.3s; }
.faq-item:nth-child(4) { transition-delay: 0.4s; }
.faq-item:nth-child(5) { transition-delay: 0.5s; }
.faq-item:nth-child(6) { transition-delay: 0.6s; }
.faq-item:nth-child(7) { transition-delay: 0.7s; }

.faq-question {
    display: flex;
    align-items: flex-start;
    gap: var(--md-spacing-lg);
    margin-bottom: var(--md-spacing-lg);
}

.faq-question i {
    font-size: 1.5rem;
    color: var(--md-sys-color-primary);
    margin-top: var(--md-spacing-xs);
    flex-shrink: 0;
}

.faq-question h3 {
    font-family: 'Syne', var(--md-font-family);
    font-size: var(--md-font-size-title-medium);
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin: 0;
}

.faq-answer {
    padding-left: calc(1.5rem + var(--md-spacing-lg));
}

.faq-answer p {
    font-size: var(--md-font-size-body-medium);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
    margin: 0;
}

/* CTA Section */
.landing-cta {
    padding: var(--md-spacing-xxxl) 0;
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, var(--md-sys-color-primary-container) 100%);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out forwards;
}

.cta-title {
    font-family: 'Syne', var(--md-font-family);
    font-size: var(--md-font-size-display-medium);
    font-weight: 700;
    color: var(--md-sys-color-on-primary);
    margin: 0 0 var(--md-spacing-lg) 0;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.cta-description {
    font-size: var(--md-font-size-body-large);
    color: var(--md-sys-color-on-primary);
    margin: 0 0 var(--md-spacing-xxxl) 0;
    opacity: 0.9;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.landing-cta .btn-primary {
    background: var(--md-sys-color-on-primary);
    color: var(--md-sys-color-primary);
}

.landing-cta .btn-primary:hover {
    background: var(--md-sys-color-on-primary);
    opacity: 0.9;
}

/* Footer */
.landing-footer {
    padding: var(--md-spacing-xxl) 0;
    background: var(--md-sys-color-surface-container-high);
    border-top: 1px solid var(--md-sys-color-outline-variant);
    position: relative;
}

.landing-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--md-sys-color-outline-variant), transparent);
}

.footer-text {
    text-align: center;
    font-size: var(--md-font-size-body-medium);
    color: var(--md-sys-color-on-surface-variant);
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-spacing-sm);
}

.footer-text i {
    color: var(--md-sys-color-primary);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .examples-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--md-spacing-lg);
    }
}

@media (max-width: 768px) {
    /* Отключаем сложные анимации на мобильных для лучшей производительности */
    .landing-hero::after {
        display: none;
    }
    
    .hero-particles {
        display: none;
    }
    
    .hero-waves {
        display: none;
    }
    
    .hero-title {
        font-size: var(--md-font-size-display-small);
        flex-direction: column;
        gap: var(--md-spacing-md);
    }
    
    .hero-logo {
        max-width: 220px;
    }

    .hero-title .material-symbols-outlined,
    .hero-title i {
        font-size: 3rem;
        animation: none;
    }
    
    .hero-title::after,
    .hero-title::before,
    .hero-title .decorative-line {
        display: none;
    }
    
    .hero-content::before {
        display: none;
    }
    
    .hero-cta-button {
        padding: var(--md-spacing-md) var(--md-spacing-xxl);
        font-size: var(--md-font-size-body-medium);
    }

    .hero-subtitle {
        font-size: var(--md-font-size-headline-small);
    }

    .hero-description {
        font-size: var(--md-font-size-body-medium);
    }

    .section-title {
        font-size: var(--md-font-size-display-small);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--md-spacing-lg);
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
        gap: var(--md-spacing-lg);
    }

    .feature-card,
    .example-card {
        padding: var(--md-spacing-xl);
    }

    .faq-item {
        padding: var(--md-spacing-lg);
    }

    .faq-question {
        flex-direction: column;
        gap: var(--md-spacing-sm);
    }

    .faq-answer {
        padding-left: 0;
    }

    .cta-title {
        font-size: var(--md-font-size-headline-large);
    }

    .btn-large {
        padding: var(--md-spacing-lg) var(--md-spacing-xxl);
        font-size: var(--md-font-size-body-medium);
    }
}

@media (max-width: 480px) {
    .landing-hero {
        padding: var(--md-spacing-xxl) var(--md-spacing-md);
    }

    .hero-title {
        font-size: var(--md-font-size-headline-large);
    }
    
    .hero-logo {
        max-width: 180px;
    }

    .hero-title i {
        font-size: 2.5rem;
    }

    .landing-container {
        padding: 0 var(--md-spacing-md);
    }

    .landing-features,
    .landing-examples,
    .landing-faq,
    .landing-cta {
        padding: var(--md-spacing-xxl) 0;
    }
}