/* ============================================================
   Arctide Systems — Stylesheet
   ============================================================ */

/* --- Reset & Base --- */

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

:root {
    /* Palette */
    --bg-primary: #FAFBFC;
    --bg-alt: #F3F5F8;
    --bg-card: #FFFFFF;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4e69;
    --text-muted: #8b90a0;
    --accent: #0277BD;
    --accent-light: #4FC3F7;
    --accent-faint: #E8F4FD;
    --border: #E2E6EC;
    --border-light: #EEF0F4;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
        Roboto, 'Helvetica Neue', Arial, sans-serif;

    /* Spacing */
    --section-padding: 3.5rem 0;
    --container-max: 1060px;
    --container-padding: 0 2rem;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.7;
}

/* --- Layout --- */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--container-padding);
}

/* --- Section Label --- */

.section-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

/* --- Hero --- */

.hero {
    padding: 1.5rem 0 3rem;
}

.hero__brand {
    margin-bottom: 1.25rem;
}

.hero__logo {
    display: block;
    height: auto;
    max-width: 480px;
}

.hero__rule {
    width: 48px;
    height: 2px;
    background: var(--accent);
    margin-bottom: 1.25rem;
}

.hero__tagline {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.hero__description {
    font-size: 1.2rem;
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 540px;
}

/* --- About --- */

.about {
    padding: var(--section-padding);
    background: var(--bg-alt);
}

.about__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about__statement {
    font-size: 1.65rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text-primary);
    padding-left: 1.25rem;
    border-left: 3px solid var(--accent);
}

.about__body p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.75;
}

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

/* --- Capabilities --- */

.capabilities {
    padding: var(--section-padding);
}

.capabilities__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.cap-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 1.75rem;
    position: relative;
    transition: border-color 0.2s ease;
}

.cap-card:hover {
    border-color: var(--accent-light);
}

.cap-card__number {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-variant-numeric: tabular-nums;
}

.cap-card__title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.cap-card__text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* --- Closing --- */

.closing {
    padding: var(--section-padding);
    text-align: center;
    background: var(--bg-alt);
}

.closing__icon {
    display: block;
    margin: 0 auto 1rem;
    width: 36px;
    height: auto;
    opacity: 0.5;
}

.closing__message {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.closing__sub {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- Footer --- */

.footer {
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-light);
}

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

.footer__copy {
    font-size: 0.775rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.footer__tagline {
    font-size: 0.775rem;
    color: var(--text-muted);
    font-style: italic;
    letter-spacing: 0.02em;
}

/* --- Responsive --- */

@media (max-width: 900px) {
    .about__layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about__statement {
        font-size: 1.4rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 2.5rem 0;
        --container-padding: 0 1.5rem;
    }

    .hero {
        padding: 1.5rem 0 2rem;
    }

    .hero__logo {
        max-width: 360px;
    }

    .hero__description {
        font-size: 1.05rem;
    }

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

    .footer__inner {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero__logo {
        max-width: 280px;
    }

    .hero__tagline {
        font-size: 0.7rem;
    }

    .about__statement {
        font-size: 1.2rem;
    }

    .cap-card {
        padding: 1.25rem;
    }
}