/* ==========================================================================
   SALTROVE — HOMEPAGE v3 (Task 13)
   New depth sections: scroll-intro, season-selector, letters-carousel,
   changelog. Layered AFTER v2 stylesheets; v2 tokens still apply.
   ========================================================================== */

/* --- C.1 SCROLL INTRO ----------------------------------------------------- */
.sr-scroll-intro {
    background: var(--sr-paper);
    padding: clamp(6rem, 14vh, 12rem) 0;
    min-height: 72vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.sr-scroll-intro__kicker {
    font-size: var(--sr-fs-micro);
    letter-spacing: var(--sr-ls-caps);
    text-transform: uppercase;
    font-weight: 600;
    color: var(--sr-gold);
    margin: 0 0 var(--sr-space-6) 0;
    text-align: center;
}
.sr-scroll-intro__text {
    font-family: var(--sr-font-display);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(2rem, 4.4vw, 3.75rem);
    line-height: 1.22;
    letter-spacing: var(--sr-ls-display);
    color: var(--sr-ink);
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
    text-wrap: balance;
}

/* --- C.2 SEASON SELECTOR -------------------------------------------------- */
.sr-season-selector {
    background: var(--sr-paper);
    padding: var(--sr-space-24) 0;
}
.sr-season-selector__tabs {
    display: inline-flex;
    gap: var(--sr-space-1);
    background: var(--sr-ink);
    padding: 6px;
    border-radius: 999px;
    margin: var(--sr-space-8) 0 var(--sr-space-10);
    flex-wrap: wrap;
}
.sr-season-selector__tab {
    appearance: none;
    border: 0;
    background: transparent;
    color: rgba(235,223,199,0.65);
    font-family: inherit;
    font-size: var(--sr-fs-small);
    letter-spacing: var(--sr-ls-caps);
    text-transform: uppercase;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: 999px;
    cursor: pointer;
    transition: color 200ms ease, background 250ms ease;
}
.sr-season-selector__tab:hover { color: var(--sr-paper); }
.sr-season-selector__tab.is-active {
    background: var(--sr-gold);
    color: var(--sr-ink);
}
.sr-season-selector__panel {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 400ms ease, transform 400ms ease;
}
.sr-season-selector__panel.is-active {
    opacity: 1;
    transform: translateY(0);
}
.sr-season-selector__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sr-space-6);
}
.sr-season-selector__card {
    position: relative;
    display: block;
    height: 380px;
    border-radius: var(--sr-radius-sm);
    overflow: hidden;
    text-decoration: none;
    color: var(--sr-paper);
}
.sr-season-selector__image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.sr-season-selector__card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(14,26,43,0.08) 0%, rgba(14,26,43,0.75) 100%);
}
.sr-season-selector__inner {
    position: absolute;
    inset: auto 0 0 0;
    padding: var(--sr-space-6);
    z-index: 1;
}
.sr-season-selector__inner .sr-kicker-mini {
    color: var(--sr-gold-soft);
    font-size: var(--sr-fs-micro);
    letter-spacing: var(--sr-ls-caps);
    text-transform: uppercase;
    font-weight: 600;
    display: block;
    margin-bottom: var(--sr-space-2);
}
.sr-season-selector__title {
    font-family: var(--sr-font-display);
    font-weight: 400;
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    line-height: var(--sr-lh-snug);
    letter-spacing: var(--sr-ls-display);
    color: var(--sr-paper);
    margin: 0;
    text-wrap: balance;
}

/* --- C.3 LETTERS CAROUSEL -------------------------------------------------- */
.sr-letters-carousel {
    background: var(--sr-ink);
    color: var(--sr-paper);
    padding: var(--sr-space-24) 0;
    position: relative;
    overflow: hidden;
}
.sr-letters-carousel__kicker {
    font-size: var(--sr-fs-micro);
    letter-spacing: var(--sr-ls-caps);
    text-transform: uppercase;
    font-weight: 600;
    color: var(--sr-gold-soft);
    margin: 0 0 var(--sr-space-10) 0;
    text-align: center;
}
.sr-letters-carousel__stage {
    position: relative;
    max-width: 960px;
    margin: 0 auto;
    min-height: 260px;
    display: grid;
    place-items: center;
    z-index: 1;
}
.sr-letter {
    position: absolute;
    inset: 0;
    margin: 0;
    padding: 0 var(--sr-space-4);
    text-align: center;
    opacity: 0;
    transform: translateY(12px);
    transition:
        opacity 900ms cubic-bezier(0.25, 0.8, 0.25, 1),
        transform 900ms cubic-bezier(0.25, 0.8, 0.25, 1);
    pointer-events: none;
}
.sr-letter.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    position: relative;
}
.sr-letter__quote {
    font-family: var(--sr-font-display);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(1.5rem, 3vw, 3rem);
    line-height: 1.25;
    color: var(--sr-paper);
    margin: 0 0 var(--sr-space-8) 0;
    letter-spacing: var(--sr-ls-display);
    text-wrap: balance;
}
.sr-letter__source {
    font-size: var(--sr-fs-micro);
    letter-spacing: var(--sr-ls-caps);
    text-transform: uppercase;
    font-weight: 600;
    color: var(--sr-gold-soft);
}
.sr-letters-carousel__dots {
    display: flex;
    justify-content: center;
    gap: var(--sr-space-3);
    margin-top: var(--sr-space-10);
    position: relative;
    z-index: 1;
}
.sr-letters-carousel__dot {
    width: 32px;
    height: 2px;
    border: 0;
    padding: 0;
    background: rgba(235,223,199,0.25);
    cursor: pointer;
    transition: background 300ms ease;
}
.sr-letters-carousel__dot:hover { background: rgba(235,223,199,0.55); }
.sr-letters-carousel__dot.is-active { background: var(--sr-gold); }

/* --- C.4 CHANGELOG --------------------------------------------------------- */
.sr-changelog {
    background: var(--sr-paper);
    padding: var(--sr-space-24) 0;
}
.sr-changelog__list {
    list-style: none;
    padding: 0;
    margin: var(--sr-space-10) 0 0 0;
    border-top: 1px solid var(--sr-line);
}
.sr-changelog__item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--sr-space-6);
    align-items: baseline;
    padding: var(--sr-space-5) 0;
    border-bottom: 1px solid var(--sr-line);
    transition: background 250ms ease;
}
.sr-changelog__item:hover {
    background: var(--sr-cream);
    margin-left: calc(var(--sr-space-4) * -1);
    margin-right: calc(var(--sr-space-4) * -1);
    padding-left: var(--sr-space-4);
    padding-right: var(--sr-space-4);
}
.sr-changelog__date {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.8125rem;
    color: var(--sr-muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.sr-changelog__link {
    display: flex;
    align-items: baseline;
    gap: var(--sr-space-3);
    text-decoration: none;
    color: var(--sr-ink);
    transition: color 200ms ease;
}
.sr-changelog__link:hover { color: var(--sr-gold); }
.sr-changelog__title {
    font-family: var(--sr-font-display);
    font-weight: 500;
    font-size: clamp(1.125rem, 1.75vw, 1.5rem);
    line-height: var(--sr-lh-snug);
}
.sr-changelog__verb {
    font-size: var(--sr-fs-micro);
    letter-spacing: var(--sr-ls-caps);
    text-transform: uppercase;
    color: var(--sr-muted);
    font-weight: 600;
    white-space: nowrap;
}

/* --- RESPONSIVE ----------------------------------------------------------- */
@media (max-width: 900px) {
    .sr-season-selector__grid { grid-template-columns: 1fr 1fr; }
    .sr-season-selector__card { height: 300px; }
    .sr-changelog__item {
        grid-template-columns: 1fr;
        gap: var(--sr-space-2);
    }
    .sr-changelog__link { flex-wrap: wrap; }
}

@media (max-width: 600px) {
    .sr-season-selector__grid { grid-template-columns: 1fr; }
    .sr-scroll-intro__text { font-size: clamp(1.5rem, 7vw, 2.5rem); }
    .sr-season-selector__tabs { width: 100%; justify-content: center; }
    .sr-season-selector__tab { padding: 8px 14px; font-size: 0.75rem; }
}

/* ==========================================================================
   TASK 20b — Mobile spacing fixes (planner -> scroll-intro gap)
   The base .sr-scroll-intro has min-height: 72vh + clamp() padding which on
   mobile becomes a giant empty section. Tighten on small viewports.
   ========================================================================== */
@media (max-width: 800px) {
    .sr-scroll-intro {
        padding-top: var(--sr-space-6) !important;
        padding-bottom: var(--sr-space-8) !important;
        min-height: auto !important;
    }
    .sr-scroll-intro__text {
        font-size: clamp(1.25rem, 5vw, 2rem) !important;
        padding: 0 var(--sr-space-5);
    }
}