/* ========== Fluent 2 Design Tokens ========== */
:root {
    /* Fluent Blue Family */
    --fluent-blue-primary: #0078d4;
    --fluent-blue-hover: #106ebe;
    --fluent-blue-pressed: #005a9e;
    --fluent-blue-light: #deecf9;
    
    /* Neutral Colors */
    --fluent-gray-10: #faf9f8;
    --fluent-gray-20: #f3f2f1;
    --fluent-gray-30: #edebe9;
    --fluent-gray-40: #e1dfdd;
    --fluent-gray-60: #c8c6c4;
    --fluent-gray-90: #a19f9d;
    --fluent-gray-130: #605e5c;
    --fluent-gray-160: #323130;
    --fluent-white: #ffffff;

    /* Acrylic & Glass */
    --acrylic-bg: rgba(255, 255, 255, 0.72);
    --acrylic-border: rgba(255, 255, 255, 0.5);
    --acrylic-blur: 20px;
    
    /* Shadows */
    --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.04), 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 4px 8px rgba(0, 0, 0, 0.06), 0 16px 32px rgba(0, 0, 0, 0.12);
    --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.06);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Typography */
    --font-family: 'Segoe UI Variable', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-caption: 12px;
    --font-size-body: 14px;
    --font-size-subtitle: 16px;
    --font-size-title: 20px;
    --font-size-headline: 28px;
    --font-size-display: 40px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 48px;
    --space-4xl: 64px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.33, 0, 0.67, 1);
    --transition-normal: 250ms cubic-bezier(0.33, 0, 0.67, 1);
    --transition-smooth: 300ms cubic-bezier(0.1, 0.9, 0.2, 1);
}

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

/* ========== Base ========== */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    line-height: 1.5;
    color: var(--fluent-gray-160);
    background: linear-gradient(165deg, #f0f6fc 0%, #e8f4fd 25%, #f5f0fa 50%, #faf5f0 75%, #f0f6fc 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ========== Layout ========== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ========== Navbar ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background: var(--acrylic-bg);
    backdrop-filter: blur(var(--acrylic-blur));
    -webkit-backdrop-filter: blur(var(--acrylic-blur));
    border-bottom: 1px solid var(--acrylic-border);
    z-index: 1000;
}

.navbar__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.navbar__logo {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--fluent-blue-primary) 0%, #50a3e0 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--fluent-white);
    font-size: var(--font-size-body);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 120, 212, 0.3);
}

.navbar__title {
    font-size: var(--font-size-body);
    font-weight: 600;
    color: var(--fluent-gray-160);
}

.navbar__nav {
    display: flex;
    gap: var(--space-xs);
}

.navbar__link {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-body);
    color: var(--fluent-gray-130);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.navbar__link:hover {
    background: rgba(0, 0, 0, 0.04);
    color: var(--fluent-gray-160);
}

.navbar__link:active {
    background: rgba(0, 0, 0, 0.08);
}


/* ========== Hero Section ========== */
.hero {
    padding-top: calc(48px + var(--space-4xl));
    padding-bottom: var(--space-4xl);
}

.hero__card {
    background: var(--acrylic-bg);
    backdrop-filter: blur(var(--acrylic-blur));
    -webkit-backdrop-filter: blur(var(--acrylic-blur));
    border-radius: var(--radius-xl);
    border: 1px solid var(--acrylic-border);
    box-shadow: var(--shadow-card);
    padding: var(--space-3xl) var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.hero__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.8) 50%, transparent 100%);
}

.hero__content {
    max-width: 1200px;
}

.hero__title {
    font-size: var(--font-size-display);
    font-weight: 600;
    color: var(--fluent-gray-160);
    line-height: 1.2;
    margin-bottom: var(--space-lg);
}

.hero__title-accent {
    background: linear-gradient(90deg, var(--fluent-blue-primary), #50a3e0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__desc {
    font-size: var(--font-size-subtitle);
    color: var(--fluent-gray-130);
    line-height: 1.6;
}

/* ========== Section ========== */
.section {
    padding: var(--space-3xl) 0;
}

.section__header {
    margin-bottom: var(--space-xl);
}

.section__title {
    font-size: var(--font-size-title);
    font-weight: 600;
    color: var(--fluent-gray-160);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.section__title-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--fluent-blue-primary), #50a3e0);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

/* ========== About Card ========== */
.about__card {
    background: var(--acrylic-bg);
    backdrop-filter: blur(var(--acrylic-blur));
    -webkit-backdrop-filter: blur(var(--acrylic-blur));
    border-radius: var(--radius-lg);
    border: 1px solid var(--acrylic-border);
    box-shadow: var(--shadow-card);
    padding: var(--space-xl);
    position: relative;
}

.about__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.6) 50%, transparent 100%);
}

.about__text {
    color: var(--fluent-gray-130);
    line-height: 1.75;
}

.about__text p + p {
    margin-top: var(--space-lg);
}

/* ========== Services Grid ========== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.service-card {
    background: var(--acrylic-bg);
    backdrop-filter: blur(var(--acrylic-blur));
    -webkit-backdrop-filter: blur(var(--acrylic-blur));
    border-radius: var(--radius-lg);
    border: 1px solid var(--acrylic-border);
    box-shadow: var(--shadow-card);
    padding: var(--space-xl);
    position: relative;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.6) 50%, transparent 100%);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.service-card__icon {
    width: 44px;
    height: 44px;
    background: var(--fluent-blue-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: var(--space-lg);
}

.service-card__title {
    font-size: var(--font-size-subtitle);
    font-weight: 600;
    color: var(--fluent-gray-160);
    margin-bottom: var(--space-sm);
}

.service-card__desc {
    font-size: var(--font-size-body);
    color: var(--fluent-gray-130);
    line-height: 1.6;
}

/* ========== Contact Section ========== */
.contact__card {
    background: var(--acrylic-bg);
    backdrop-filter: blur(var(--acrylic-blur));
    -webkit-backdrop-filter: blur(var(--acrylic-blur));
    border-radius: var(--radius-lg);
    border: 1px solid var(--acrylic-border);
    box-shadow: var(--shadow-card);
    padding: var(--space-xl);
    position: relative;
}

.contact__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.6) 50%, transparent 100%);
}

.contact__list {
    display: flex;
    gap: var(--space-3xl);
}

.contact__item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.contact__icon {
    width: 40px;
    height: 40px;
    background: var(--fluent-blue-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.contact__label {
    font-size: var(--font-size-caption);
    color: var(--fluent-gray-90);
    margin-bottom: 2px;
}

.contact__value {
    font-size: var(--font-size-body);
    font-weight: 500;
    color: var(--fluent-gray-160);
}

/* ========== Footer ========== */
.footer {
    padding: var(--space-xl) 0;
    margin-top: var(--space-2xl);
}

.footer__card {
    background: var(--acrylic-bg);
    backdrop-filter: blur(var(--acrylic-blur));
    -webkit-backdrop-filter: blur(var(--acrylic-blur));
    border-radius: var(--radius-lg);
    border: 1px solid var(--acrylic-border);
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer__copyright {
    font-size: var(--font-size-caption);
    color: var(--fluent-gray-130);
}

.footer__link {
    font-size: var(--font-size-caption);
    color: var(--fluent-blue-primary);
    transition: color var(--transition-fast);
}

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

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-lg);
    }

    .navbar__nav {
        display: none;
    }

    .navbar__title {
        font-size: var(--font-size-caption);
    }

    .hero {
        padding-top: calc(48px + var(--space-2xl));
        padding-bottom: var(--space-2xl);
    }

    .hero__card {
        padding: var(--space-xl);
    }

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

    .hero__desc {
        font-size: var(--font-size-body);
    }

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

    .services__grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .contact__list {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .footer__card {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}