/* Full-viewport scroll sections — home & portfolio */

:root {
    --panel-height: calc(100dvh - var(--nav-height));
    --panel-height-svh: calc(100svh - var(--nav-height));
    --section-divider: color-mix(in srgb, var(--accent) 28%, var(--border));
}

html.snap-page {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    overflow-x: clip;
}

html.snap-page,
html.snap-page body {
    min-height: 0;
    height: auto;
    margin: 0;
    padding: 0;
}

html.snap-page body {
    overflow-x: clip;
}

.snap-page .site-main,
.snap-page main {
    margin-top: var(--nav-height);
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-bottom: 0 !important;
}

@media (prefers-reduced-motion: no-preference) {
    html.snap-page {
        scroll-snap-type: y mandatory;
    }
}

/* —— Panel shell —— */
.snap-panel {
    position: relative;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    scroll-margin-top: var(--nav-height);
    min-height: var(--panel-height-svh);
    min-height: var(--panel-height);
    height: var(--panel-height);
    max-height: var(--panel-height);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-block: 0;
    overflow: hidden;
}

/* Subtle horizontal divider between sections */
.snap-panel::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: min(88%, 42rem);
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--section-divider) 22%,
        var(--section-divider) 78%,
        transparent 100%
    );
    opacity: 0.9;
    pointer-events: none;
    z-index: 2;
}

.snap-panel--end::after,
.snap-panel:last-of-type::after {
    display: none;
}

/* —— Centered content column —— */
.snap-panel__inner {
    width: 100%;
    max-width: var(--max-width, 1140px);
    margin-inline: auto;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
    align-self: center;
    min-height: 0;
    max-height: 100%;
}

.snap-panel__inner.container {
    max-width: var(--max-width, 1140px);
    padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
    padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}

@media (prefers-reduced-motion: no-preference) {
    .snap-panel__inner:not(.container) {
        padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
        padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
    }
}

/* Section enter animation */
@media (prefers-reduced-motion: no-preference) {
    .snap-panel__inner {
        opacity: 0;
        transform: translate3d(0, 28px, 0);
        transition:
            opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1),
            transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
        transition-delay: 0.05s;
    }

    .snap-panel.is-active .snap-panel__inner,
    .snap-panel.is-initial .snap-panel__inner {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    .snap-panel.is-active::after {
        opacity: 1;
        transition: opacity 0.5s ease 0.2s;
    }
}

/* Content-heavy: centered block, scroll inside when needed */
.snap-panel--fit {
    justify-content: center;
}

.snap-panel--fit .snap-panel__inner {
    justify-content: center;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
    padding-block: var(--space-md);
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}

.snap-panel--fit .snap-panel__inner::-webkit-scrollbar {
    width: 5px;
}

.snap-panel--fit .snap-panel__inner::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 4px;
}

/* Hero: keep content flow natural */
.snap-panel--hero {
    justify-content: center;
}

.snap-panel--hero .snap-panel__inner {
    justify-content: center;
    gap: var(--space-md);
}

/* Last panel: contact centered, footer pinned */
.snap-panel--end {
    justify-content: space-between;
    padding-bottom: 0;
}

.snap-panel--end .snap-panel__inner {
    flex: 1 1 auto;
    justify-content: center;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    padding-bottom: var(--space-md);
}

.snap-panel--end > .site-footer,
.snap-panel--end > .footer.site-footer {
    flex-shrink: 0;
    width: 100%;
    margin-top: 0;
    border-top: 1px solid var(--section-divider);
    box-shadow: inset 0 1px 0 color-mix(in srgb, var(--accent) 12%, transparent);
}

.snap-page .site-main::after,
.snap-page main::after {
    display: none;
    content: none;
    height: 0;
}

.snap-page .snap-panel.section {
    padding-top: 0;
    padding-bottom: 0;
}

/* Center section titles where marked */
.snap-panel .section-head.center,
.snap-panel .section-header.center {
    text-align: center;
    margin-inline: auto;
}

.snap-panel .section-head.center .section-desc,
.snap-panel .section-header.center .section-subtitle {
    margin-inline: auto;
}

@media (prefers-reduced-motion: reduce) {
    html.snap-page {
        scroll-snap-type: none;
        scroll-behavior: auto;
    }

    .snap-panel {
        scroll-snap-stop: normal;
        min-height: auto;
        overflow: visible;
    }

    .snap-panel__inner {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .snap-panel--fit .snap-panel__inner,
    .snap-panel--end .snap-panel__inner {
        overflow: visible;
    }
}