/* ===== CSS Variables ===== */
:root {
    /* Brand Colors from Logo */
    --color-primary: #0a7093;
    --color-primary-light: #4cbbec;
    --color-secondary: #ff2464;
    --color-accent-yellow: #fac600;
    --color-accent-teal: #00bfa0;
    --color-accent-green: #7ac943;
    --color-accent-purple: #a883bb;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, #6bb43b 0%, #00a3b8 50%, #3063ac 100%);
    --gradient-secondary: linear-gradient(135deg, #9c4f98 0%, #ec6b85 28%, #fcc808 62%, #6eb75d 100%);

    /* Neutrals */
    --color-dark: #1a1a2e;
    --color-dark-alt: #16213e;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    --color-gray-100: #f2f2f2;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;

    /* Typography */
    --font-family: '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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 4rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 2.5rem;
    --space-8: 3rem;
    --space-9: 4rem;
    --space-10: 5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Container */
    --container-max: 1200px;
    --header-height: 80px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===== Utility Classes ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.highlight {
    color: var(--color-secondary);
}

.section {
    padding: var(--space-10) 0;
}

.section--alt {
    background-color: var(--color-gray-100);
}

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

.section__subtitle {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.section__title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-5);
}

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

.section__title--light {
    color: var(--color-white);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-8);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn--primary {
    background: var(--color-secondary);
    color: var(--color-white);
}

.btn--primary:hover {
    background: #e01f57;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.btn--outline:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

.btn--full {
    width: 100%;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
}

.header.scrolled .nav__link {
    color: var(--color-gray-800);
}

.header.scrolled .nav__link:hover,
.header.scrolled .nav__link.active {
    color: var(--color-secondary);
}

.header.scrolled .logo-light {
    display: none;
}

.header.scrolled .logo-dark {
    display: block;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.nav__logo img {
    height: 40px;
    width: auto;
}

.logo-dark {
    display: none;
}

.nav__list {
    display: flex;
    gap: var(--space-6);
}

.nav__link {
    font-weight: 500;
    color: var(--color-white);
    position: relative;
    padding: var(--space-2) 0;
}

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

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

.nav__toggle,
.nav__close {
    display: none;
    color: var(--color-white);
}

.header.scrolled .nav__toggle {
    color: var(--color-gray-800);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-alt) 100%);
    z-index: 0;
}

.hero__bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234cbbec' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero__bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, var(--color-dark) 70%);
}

.circuit-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.6;
}

.hero__content {
    text-align: center;
    color: var(--color-white);
    z-index: 2;
    position: relative;
}

.hero__title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-6xl));
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-5);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    font-weight: 300;
    color: var(--color-gray-400);
    margin-bottom: var(--space-8);
}

.hero__buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.hero__scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-down {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--color-white);
    border-radius: 25px;
    position: relative;
}

.scroll-down span {
    position: absolute;
    top: 10px;
    left: 50%;
    width: 6px;
    height: 6px;
    margin-left: -3px;
    background: var(--color-white);
    border-radius: 50%;
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% { opacity: 0; transform: translateY(0); }
    40% { opacity: 1; }
    80% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 0; }
}

/* ===== About ===== */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-9);
    align-items: center;
}

.about__text p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-4);
}

.about__text p:last-child {
    margin-bottom: 0;
}

/* ===== Services ===== */
.services__intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-9);
    align-items: center;
    margin-bottom: var(--space-9);
}

.services__intro-right p,
.games__intro-left p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.service-card {
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

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

.service-card__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-5);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card__icon svg {
    width: 48px;
    height: 48px;
}

.service-card__icon--blue {
    background: linear-gradient(135deg, rgba(76, 187, 236, 0.1), rgba(10, 112, 147, 0.1));
    color: var(--color-primary-light);
}

.service-card__icon--purple {
    background: linear-gradient(135deg, rgba(168, 131, 187, 0.1), rgba(156, 79, 152, 0.1));
    color: var(--color-accent-purple);
}

.service-card__icon--teal {
    background: linear-gradient(135deg, rgba(0, 191, 160, 0.1), rgba(122, 201, 67, 0.1));
    color: var(--color-accent-teal);
}

.service-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--color-gray-900);
}

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

/* ===== Games ===== */
.games__intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-9);
    align-items: center;
    margin-bottom: var(--space-9);
}

/* ===== FAQ / Accordion ===== */
.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion__item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.accordion__header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-white);
    text-align: left;
    transition: color var(--transition-base);
}

.accordion__header:hover {
    color: var(--color-secondary);
}

.accordion__icon {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-base);
}

.accordion__item.active .accordion__icon {
    transform: rotate(45deg);
}

.accordion__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.accordion__item.active .accordion__content {
    max-height: 500px;
    padding-bottom: var(--space-5);
}

.accordion__content p {
    color: var(--color-gray-400);
}

/* ===== Contact ===== */
.contact__grid {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact__subtitle {
    font-size: var(--font-size-2xl);
    color: var(--color-secondary);
    margin-bottom: var(--space-4);
}

.contact__info p {
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

.contact__item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-gray-700);
}

.contact__item svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.contact__form-wrapper {
    background: var(--color-gray-100);
    padding: var(--space-7);
    border-radius: var(--radius-lg);
}

.form__group {
    margin-bottom: var(--space-4);
}

.form__group input,
.form__group textarea {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    background: var(--color-white);
}

.form__group input:focus,
.form__group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form__group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-dark);
    color: var(--color-gray-400);
    padding: var(--space-9) 0 var(--space-5);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-8);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
    height: 40px;
    margin-bottom: var(--space-4);
}

.footer__brand p {
    max-width: 300px;
}

.footer__links h4,
.footer__contact h4 {
    color: var(--color-white);
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-4);
}

.footer__links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

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

.footer__contact p {
    margin-bottom: var(--space-2);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--space-5);
    font-size: var(--font-size-sm);
}

/* ===== Animations ===== */
.animate-fade-in {
    animation: fadeIn 1s ease forwards;
}

.animate-fade-in-delay {
    animation: fadeIn 1s ease 0.3s forwards;
    opacity: 0;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease 0.6s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media screen and (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .section {
        padding: var(--space-8) 0;
    }

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

    /* Mobile Navigation */
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-dark);
        padding: var(--space-9) var(--space-5);
        transition: right var(--transition-base);
        z-index: 100;
    }

    .nav__menu.show {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        gap: var(--space-4);
    }

    .nav__link {
        font-size: var(--font-size-lg);
    }

    .nav__toggle,
    .nav__close {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
    }

    .nav__close {
        position: absolute;
        top: var(--space-4);
        right: var(--space-4);
        color: var(--color-white);
    }

    /* Grids */
    .about__grid,
    .services__intro,
    .games__intro,
    .contact__grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .games__intro {
        direction: rtl;
    }

    .games__intro > * {
        direction: ltr;
    }

    .games__intro-left {
        order: 2;
    }

    .games__intro-right {
        order: 1;
    }

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

    .footer__grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__brand p {
        max-width: none;
    }

    .footer__logo {
        margin: 0 auto var(--space-4);
    }

    /* Hero */
    .hero__buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

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

    .hero__subtitle {
        font-size: var(--font-size-base);
    }

    .service-card {
        padding: var(--space-5);
    }

    .service-card__icon {
        width: 60px;
        height: 60px;
    }

    .service-card__icon svg {
        width: 36px;
        height: 36px;
    }
}

/* ===== Overlay for mobile menu ===== */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 50;
}

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