:root {
    --color-deep-blue: #1D4ED8;
    --color-electric-blue: #3B82F6;
    --color-cyan: #22D3EE;
    --color-mint: #2DD4BF;
    --color-gold: #FBBF24;

    --color-white: #FFFFFF;
    --color-black: #0F172A;
    --color-gray-50: #F8FAFC;
    --color-gray-100: #F1F5F9;
    --color-gray-200: #E2E8F0;
    --color-gray-300: #CBD5E1;
    --color-gray-400: #94A3B8;
    --color-gray-500: #64748B;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1E293B;
    --color-gray-900: #0F172A;

    --gradient-primary: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-electric-blue) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-mint) 100%);
    --gradient-gold: linear-gradient(135deg, var(--color-gold) 0%, #F59E0B 100%);

    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    --spacing-32: 8rem;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    --radius-sm: 0.375rem;
    --radius-base: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-4);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-4);
}

a {
    color: var(--color-electric-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-deep-blue);
}

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

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.header__container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-4) var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__brand {
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform var(--transition-fast);
}

.header__brand:hover {
    transform: scale(1.05);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--spacing-6);
    align-items: center;
}

.nav__link {
    font-weight: 500;
    color: var(--color-gray-700);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-base);
    transition: all var(--transition-fast);
    position: relative;
}

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

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

.nav__link:hover::after {
    width: 80%;
}

.nav__link--active {
    color: var(--color-electric-blue);
}

.nav__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    color: var(--color-gray-700);
    font-size: var(--font-size-2xl);
}

.main {
    min-height: 100vh;
}

.section {
    padding: var(--spacing-20) var(--spacing-6);
    position: relative;
}

.section--alt {
    background-color: var(--color-gray-50);
}

.section--dark {
    background: var(--color-gray-900);
    color: var(--color-white);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5,
.section--dark h6 {
    color: var(--color-white);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
}

.container--narrow {
    max-width: 960px;
}

.container--wide {
    max-width: 1440px;
}

.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.03) 0%, rgba(59, 130, 246, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 60%;
    height: 120%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-30px) rotate(5deg);
    }
}

.hero__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__text h1 {
    font-size: var(--font-size-6xl);
    margin-bottom: var(--spacing-6);
    line-height: 1.1;
}

.hero__text p {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-8);
    line-height: 1.7;
}

.hero__visual {
    position: relative;
}

.grid {
    display: grid;
    gap: var(--spacing-8);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-base);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

.card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    color: var(--color-white);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-6);
}

.card__title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-4);
}

.card__text {
    color: var(--color-gray-600);
    line-height: 1.7;
}

.card--glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card--featured {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.card--featured .card__title,
.card--featured .card__text {
    color: var(--color-white);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-8);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-base);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn span {
    position: relative;
    z-index: 1;
}

.btn--primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-base);
}

.btn--primary:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn--secondary {
    background: var(--color-white);
    color: var(--color-electric-blue);
    border: 2px solid var(--color-electric-blue);
}

.btn--secondary:hover {
    background: var(--color-electric-blue);
    color: var(--color-white);
}

.btn--accent {
    background: var(--gradient-accent);
    color: var(--color-white);
}

.btn--gold {
    background: var(--gradient-gold);
    color: var(--color-gray-900);
}

.btn--large {
    padding: var(--spacing-5) var(--spacing-12);
    font-size: var(--font-size-lg);
}

.btn--small {
    padding: var(--spacing-2) var(--spacing-6);
    font-size: var(--font-size-sm);
}

.section__header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-16);
}

.section__title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-6);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    line-height: 1.7;
}

.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.split-section--reverse {
    direction: rtl;
}

.split-section--reverse>* {
    direction: ltr;
}

.feature-box {
    padding: var(--spacing-6);
    border-left: 4px solid var(--color-electric-blue);
    background: var(--color-gray-50);
    border-radius: var(--radius-base);
    margin-bottom: var(--spacing-6);
    transition: all var(--transition-base);
}

.feature-box:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.feature-box__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-3);
    color: var(--color-electric-blue);
}

.feature-box__text {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.form {
    max-width: 600px;
    margin: 0 auto;
}

.form__group {
    margin-bottom: var(--spacing-6);
}

.form__label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 600;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form__input,
.form__textarea {
    width: 100%;
    padding: var(--spacing-4);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-base);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background: var(--color-white);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-electric-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form__input--error,
.form__textarea--error {
    border-color: #EF4444;
}

.form__error {
    display: none;
    color: #EF4444;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-2);
}

.form__error--visible {
    display: block;
}

.form__textarea {
    resize: vertical;
    min-height: 150px;
}

.form__checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.form__checkbox {
    margin-top: 4px;
}

.form__checkbox-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-16) var(--spacing-6) var(--spacing-8);
}

.footer__content {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-12);
}

.footer__brand {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-4);
}

.footer__text {
    color: var(--color-gray-400);
    line-height: 1.7;
}

.footer__section-title {
    color: var(--color-white);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
    font-weight: 600;
}

.footer__list {
    list-style: none;
}

.footer__link {
    display: block;
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-3);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-cyan);
}

.footer__bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    transform: translateY(100%);
    transition: transform var(--transition-slow);
}

.cookie-banner.active {
    transform: translateY(0);
}

.cookie-banner__container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-8);
}

.cookie-banner__text {
    color: var(--color-gray-300);
    flex: 1;
}

.cookie-banner__text h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-xl);
}

.cookie-banner__text p {
    margin-bottom: 0;
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

.cookie-banner__actions {
    display: flex;
    gap: var(--spacing-4);
    flex-shrink: 0;
}

.cookie-settings {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.cookie-settings.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.cookie-settings__header {
    margin-bottom: var(--spacing-6);
}

.cookie-settings__title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-3);
}

.cookie-settings__category {
    padding: var(--spacing-4);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-base);
    margin-bottom: var(--spacing-4);
}

.cookie-settings__category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2);
}

.cookie-settings__category-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 0;
}

.cookie-settings__category-text {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

.cookie-settings__actions {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch__slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-gray-300);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.toggle-switch__slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--color-white);
    transition: var(--transition-base);
    border-radius: 50%;
}

.toggle-switch input:checked+.toggle-switch__slider {
    background: var(--gradient-primary);
}

.toggle-switch input:checked+.toggle-switch__slider:before {
    transform: translateX(24px);
}

.toggle-switch input:disabled+.toggle-switch__slider {
    opacity: 0.5;
    cursor: not-allowed;
}

.overlay {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-2 {
    margin-bottom: var(--spacing-2);
}

.mb-4 {
    margin-bottom: var(--spacing-4);
}

.mb-6 {
    margin-bottom: var(--spacing-6);
}

.mb-8 {
    margin-bottom: var(--spacing-8);
}

.mb-12 {
    margin-bottom: var(--spacing-12);
}

.mt-0 {
    margin-top: 0;
}

.mt-2 {
    margin-top: var(--spacing-2);
}

.mt-4 {
    margin-top: var(--spacing-4);
}

.mt-6 {
    margin-top: var(--spacing-6);
}

.mt-8 {
    margin-top: var(--spacing-8);
}

.mt-12 {
    margin-top: var(--spacing-12);
}

@media (max-width: 1024px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
    }

    .grid--3,
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero__content,
    .split-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }

    .footer__content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-12) var(--spacing-4);
    }

    .header__container {
        padding: var(--spacing-3) var(--spacing-4);
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-white);
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-8) var(--spacing-6);
        flex-direction: column;
        align-items: flex-start;
        transition: right var(--transition-base);
        z-index: 1001;
    }

    .nav.active {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-2);
    }

    .nav__link {
        width: 100%;
        padding: var(--spacing-4);
    }

    .nav__toggle {
        display: block;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: 70vh;
    }

    .hero__text h1 {
        font-size: var(--font-size-4xl);
    }

    .cookie-banner__container {
        flex-direction: column;
        align-items: flex-start;
    }

    .cookie-banner__actions {
        width: 100%;
    }

    .footer__content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
    }

    .cookie-banner__actions {
        flex-direction: column;
    }

    .cookie-settings__actions {
        flex-direction: column;
    }
}