/* ========================================
   Audio.Family — Layout System
   ======================================== */

body {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: var(--fw-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* ---- Container ---- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container--sm {
    max-width: var(--max-width-sm);
}

.container--xs {
    max-width: var(--max-width-xs);
}

/* ---- Sections ---- */
.section {
    padding: var(--space-24) 0;
    position: relative;
}

.section--hero {
    padding-top: calc(var(--nav-height) + var(--space-16));
    padding-bottom: var(--space-24);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

/* ---- Section Headers ---- */
.section__label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.section__label::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary);
}

.section__title {
    font-family: var(--font-heading);
    font-size: var(--fs-4xl);
    font-weight: var(--fw-bold);
    color: var(--color-text-heading);
    margin-bottom: var(--space-6);
    max-width: 18ch;
}

.section__subtitle {
    font-size: var(--fs-lg);
    color: var(--color-text-muted);
    max-width: 55ch;
    margin-bottom: var(--space-12);
    line-height: 1.7;
}

/* ---- Grid Systems ---- */
.grid {
    display: grid;
    gap: var(--space-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);
}

/* ---- Flex Utilities ---- */
.flex {
    display: flex;
}

.flex--center {
    align-items: center;
    justify-content: center;
}

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

.flex--col {
    flex-direction: column;
}

.flex--gap-sm {
    gap: var(--space-3);
}

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

.flex--gap-lg {
    gap: var(--space-10);
}

/* ---- Text Utilities ---- */
.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-warm) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradient-shift 6s ease infinite;
}

.text-gradient--warm {
    background: linear-gradient(135deg, var(--color-warm) 0%, #FF6B9D 50%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ---- Scroll Animation States ---- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--duration-slow) var(--ease-out),
        transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal--delay-1 {
    transition-delay: 100ms;
}

.reveal--delay-2 {
    transition-delay: 200ms;
}

.reveal--delay-3 {
    transition-delay: 300ms;
}

.reveal--delay-4 {
    transition-delay: 400ms;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .section__title {
        font-size: var(--fs-3xl);
    }

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

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

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .section {
        padding: var(--space-16) 0;
    }

    .section--hero {
        padding-top: calc(var(--nav-height) + var(--space-10));
        min-height: auto;
    }

    .container {
        padding: 0 var(--space-4);
    }

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

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

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

@media (max-width: 480px) {
    .section__title {
        font-size: var(--fs-xl);
    }
}