/* ==========================================================================
   Tempesta Space — Shared Stylesheet
   Reusable across all pages of the site.
   ========================================================================== */

:root {
    /* Colors — light, professional palette */
    --color-bg: #fdfdfc;
    --color-surface: #ffffff;
    --color-surface-alt: #f4f6f5;
    --color-border: #e6e8e6;
    --color-text: #22262b;
    --color-text-muted: #5b6470;
    --color-primary: #3d5a80;
    --color-primary-dark: #2c4360;
    --color-accent: #ee6c4d;
    --color-accent-dark: #d85834;
    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Fraunces', Georgia, serif;
    /* Layout */
    --container-width: 1160px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(20, 24, 28, 0.06);
    --shadow-md: 0 8px 24px rgba(20, 24, 28, 0.08);
    --transition: 0.2s ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

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

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

button {
    font-family: inherit;
    cursor: pointer;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    margin: 0 0 0.5em;
    color: var(--color-text);
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--color-primary);
    color: #fff;
    padding: 0.75em 1em;
    z-index: 1000;
}

    .skip-link:focus {
        left: 0;
    }

/* ---------- Layout helpers ---------- */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--color-surface-alt);
}

.section-header {
    max-width: 620px;
    margin-bottom: 40px;
}

    .section-header h2 {
        font-size: 2rem;
    }

.section-lead {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.section-footer {
    margin-top: 32px;
}

.section-header-center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-subheader {
    margin-top: 48px;
    margin-bottom: 24px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    margin: 0 0 12px;
}

.coming-soon-banner {
    padding: 32px;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text-muted);
    text-align: center;
}

.coming-soon-label {
    display: inline-block;
    margin-bottom: 10px;
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.coming-soon-text {
    font-size: smaller;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

    .btn-primary:hover {
        background: var(--color-primary-dark);
        transform: translateY(-1px);
    }

.btn-outline {
    border-color: var(--color-border);
    color: var(--color-text);
    background: transparent;
}

    .btn-outline:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

.btn-text {
    color: var(--color-primary);
    font-weight: 600;
    padding: 0;
}

    .btn-text:hover {
        color: var(--color-primary-dark);
    }

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(253, 253, 252, 0.9);
    backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.05rem;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
}

.brand-name {
    font-family: var(--font-display);
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 28px;
}

.main-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition);
}

    .main-nav a:hover {
        color: var(--color-primary);
    }

.nav-cta {
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    color: #fff !important;
}

    .nav-cta:hover {
        background: var(--color-primary-dark);
        color: #fff !important;
    }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    padding: 0;
}

    .nav-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--color-text);
        transition: transform var(--transition), opacity var(--transition);
    }

    .nav-toggle.is-open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.is-open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.is-open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

/* ---------- Hero ---------- */
.hero {
    padding: 110px 0 90px;
    background: linear-gradient(180deg, var(--color-surface-alt) 0%, var(--color-bg) 100%);
}

.hero-inner {
    max-width: 720px;
}

.hero h1 {
    font-size: 2.75rem;
    margin-bottom: 20px;
}

.hero-lead {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ---------- Page hero (subpages) ---------- */
.page-hero {
    padding: 64px 0 40px;
    background: linear-gradient(180deg, var(--color-surface-alt) 0%, var(--color-bg) 100%);
}

.page-hero-inner {
    max-width: 720px;
}

.page-hero h1 {
    font-size: 2.4rem;
    margin-bottom: 12px;
}

.page-hero-lead {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* ---------- About page ---------- */
.about-intro {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.avatar-lg {
    flex-shrink: 0;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    object-fit: cover;
    border: 1px solid var(--color-border);
}

.bio {
    max-width: 720px;
}

    .bio p {
        margin: 0 0 20px;
        font-size: 1.05rem;
        line-height: 1.75;
        color: var(--color-text);
    }

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

.recognition-grid .card-body {
    gap: 4px;
}

    .recognition-grid .card-body h3 {
        font-size: 1rem;
    }

    .recognition-grid .card-body p {
        font-size: 0.9rem;
    }

.card-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-icon {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--color-border);
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.tag {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
}

.tag-accent {
    background: rgba(238, 108, 77, 0.1);
    border-color: rgba(238, 108, 77, 0.35);
    color: var(--color-accent-dark);
}

/* ---------- Profile / external links row ---------- */
.profile-links {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 28px;
}

    .profile-links .btn .icon {
        width: 18px;
        height: 18px;
        fill: currentColor;
        flex-shrink: 0;
    }

.social-icons {
    justify-content: center;
}

    .social-icons .btn {
        padding: 12px;
        border-radius: 50%;
    }

        .social-icons .btn .icon {
            margin: 0;
        }

/* ---------- Category / scrollspy nav ---------- */
.category-nav {
    top: 72px;
    z-index: 90;
    background: rgba(253, 253, 252, 0.95);
    backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 14px 0;
}

    .category-nav ul {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
    }

    .category-nav a {
        display: inline-block;
        padding: 8px 16px;
        border-radius: 999px;
        border: 1px solid var(--color-border);
        font-size: 0.88rem;
        font-weight: 600;
        color: var(--color-text-muted);
        transition: border-color var(--transition), color var(--transition), background var(--transition);
    }

        .category-nav a:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .category-nav a.is-active {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(61, 90, 128, 0.08);
        }

.category-section {
    scroll-margin-top: 140px;
}

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

/* ---------- Cards / grid ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

    .card-grid[data-cols="2"] {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-grid[data-cols="4"] {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--transition), transform var(--transition);
}

    .card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
    }

.card-link-wrapper {
    display: block;
    color: inherit;
    text-decoration: none;
}

    .card-link-wrapper:hover {
        color: inherit;
        text-decoration: none;
    }

.card-media {
    display: block;
    height: 180px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.card-media-book {
    aspect-ratio: 2 / 3;
    height: auto;
    background-size: contain;
    background-repeat: no-repeat;
    background-position-x: center;
    background-position-y: top;
}

.card-media-blog {
    aspect-ratio: 3 / 2;
    height: auto;
    background-size: cover;
    background-repeat: no-repeat;
    background-position-x: left;
    background-position-y: top;
}

.card-media-video, .card-media-music {
    height: 160px;
}

.play-badge {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    background: rgba(34, 38, 43, 0.28);
}

.card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.card-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.card-body h3 {
    font-size: 1.1rem;
    margin: 0;
}

    .card-body h3 a:hover {
        color: var(--color-primary);
    }

.card-body p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.card-link {
    margin-top: auto;
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.9rem;
    padding-top: 6px;
}

    .card-link:hover {
        color: var(--color-primary-dark);
    }

.flag-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    border-radius: 30%;
    object-fit: cover;
    border: 1px solid var(--color-border);
}

/* ---------- Band / CTA section (Travel) ---------- */
.section-band {
    background: var(--color-primary);
    color: #fff;
}

.band-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.section-band h2 {
    color: #fff;
}

.section-band p {
    color: rgba(255,255,255,0.85);
    margin: 0;
}

.section-band .eyebrow {
    color: #f4c9a4;
}

.section-band .btn-primary {
    background: var(--color-accent);
}

    .section-band .btn-primary:hover {
        background: var(--color-accent-dark);
    }

/* ---------- Contact form ---------- */
.contact-inner {
    max-width: 620px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

    .form-row label {
        font-size: 0.9rem;
        font-weight: 600;
    }

    .form-row input, .form-row textarea, .form-row select {
        font-family: inherit;
        font-size: 1rem;
        padding: 12px 14px;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-sm);
        background: var(--color-surface);
        color: var(--color-text);
        resize: vertical;
    }

    .form-row select {
        appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%235b6470'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.06l3.71-3.83a.75.75 0 111.08 1.04l-4.25 4.39a.75.75 0 01-1.08 0L5.21 8.27a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 14px center;
        background-size: 16px;
        padding-right: 40px;
    }

        .form-row input:focus, .form-row textarea:focus, .form-row select:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(61, 90, 128, 0.15);
        }

.contact-form .btn {
    align-self: flex-start;
}

.form-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin: 0;
}

.contact-success {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
}

/* ---------- Course tiles ---------- */
.course-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(61, 90, 128, 0.1);
    color: var(--color-primary);
    margin-bottom: 4px;
}

.course-meta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin: 4px 0 0;
}

/* ---------- Music: featured single ---------- */
.single-feature {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 40px;
    align-items: center;
}

.video-embed {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #14171a;
}

    .video-embed video,
    .video-embed iframe {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        border: 0;
        object-fit: cover;
    }

.single-info h3 {
    font-size: 1.6rem;
    margin: 6px 0 10px;
}

.single-info p {
    color: var(--color-text-muted);
    margin: 0 0 20px;
}

.audio-player {
    width: 100%;
    margin-bottom: 20px;
    border-radius: var(--radius-sm);
}

/* ---------- Music: albums ---------- */
.card-media-album {
    aspect-ratio: 1 / 1;
    height: auto;
}

.track-list {
    list-style: none;
    margin: 14px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

    .track-list li {
        display: flex;
        justify-content: space-between;
        gap: 12px;
        font-size: 0.88rem;
        color: var(--color-text-muted);
        padding: 7px 0;
        border-bottom: 1px solid var(--color-border);
    }

        .track-list li:last-child {
            border-bottom: none;
        }

    .track-list .track-duration {
        flex-shrink: 0;
        color: var(--color-text-muted);
    }

@media (max-width: 900px) {
    .single-feature {
        grid-template-columns: 1fr;
    }
}

/* ---------- Album detail page ---------- */
.album-hero-inner {
    display: flex;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.album-back {
    display: inline-block;
    margin-bottom: 16px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

    .album-back:hover {
        color: var(--color-primary);
    }

.album-cover-lg {
    width: 220px;
    height: 220px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    background-size: cover;
    background-position: center;
    box-shadow: var(--shadow-md);
}

.album-meta {
    max-width: 520px;
}

    .album-meta h1 {
        font-size: 2rem;
        margin-bottom: 8px;
    }

    .album-meta p {
        color: var(--color-text-muted);
        margin: 0;
    }

.album-layout {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 48px;
    align-items: start;
}

.album-player {
    position: sticky;
    top: 96px;
}

.now-playing {
    margin-top: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.album-tracklist h2 {
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.track-rows {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--color-border);
}

.track-row {
    border-bottom: 1px solid var(--color-border);
}

.track-row-btn {
    all: unset;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 14px 10px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

    .track-row-btn:hover,
    .track-row.is-active .track-row-btn {
        background: var(--color-surface-alt);
    }

.track-number {
    width: 22px;
    color: var(--color-text-muted);
    font-variant-numeric: tabular-nums;
    font-size: 0.9rem;
}

.track-name {
    flex: 1;
    font-weight: 600;
}

.track-row.is-active .track-name {
    color: var(--color-primary);
}

.track-row .track-duration {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.track-lyrics-icon {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    padding: 4px 10px;
    border-radius: 999px;
    flex-shrink: 0;
}

.track-row-btn:hover .track-lyrics-icon,
.track-row.is-active .track-lyrics-icon {
    border-color: var(--color-primary);
}

/* Lyrics side panel */
.lyrics-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 23, 26, 0.42);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    z-index: 190;
}

    .lyrics-overlay.is-open {
        opacity: 1;
        visibility: visible;
    }

.lyrics-panel {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 400px;
    max-width: 88vw;
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 200;
    display: flex;
    flex-direction: column;
}

    .lyrics-panel.is-open {
        transform: translateX(0);
    }

.lyrics-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 22px 24px;
    border-bottom: 1px solid var(--color-border);
}

    .lyrics-panel-header h3 {
        margin: 0;
        font-size: 1.15rem;
    }

.lyrics-close {
    background: none;
    border: none;
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 0 4px;
}

    .lyrics-close:hover {
        color: var(--color-text);
    }

.lyrics-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
    color: var(--color-text-muted);
    line-height: 1.85;
}

    .lyrics-body p {
        margin: 0 0 1.2em;
    }

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

@media (max-width: 900px) {
    .album-layout {
        grid-template-columns: 1fr;
    }

    .album-player {
        position: static;
    }
}

@media (max-width: 520px) {
    .lyrics-panel {
        width: 100%;
        max-width: 100%;
    }
}

/* ---------- Course detail page ---------- */
.course-hero-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.course-detail-title {
    max-width: 760px;
}

    .course-detail-title h1 {
        font-size: 2.2rem;
        margin-bottom: 10px;
    }

.info-grid .card-body p {
    margin: 0;
    color: var(--color-text-muted);
}

.checklist {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

    .checklist li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
    }

    .checklist .check-icon {
        flex-shrink: 0;
        width: 22px;
        height: 22px;
        border-radius: 50%;
        background: rgba(61, 90, 128, 0.12);
        color: var(--color-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        margin-top: 2px;
    }

        .checklist .check-icon svg {
            width: 13px;
            height: 13px;
            fill: none;
            stroke: currentColor;
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

    .checklist span:last-child {
        color: var(--color-text);
    }

.outline-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--color-border);
}

    .outline-list li {
        display: flex;
        gap: 16px;
        padding: 16px 4px;
        border-bottom: 1px solid var(--color-border);
    }

.outline-number {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.outline-item h3 {
    font-size: 1rem;
    margin: 0 0 4px;
}

.outline-item p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.slide-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.slide-frame {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-surface-alt);
}

    .slide-frame img {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
        display: block;
    }

.slide-caption {
    padding: 12px 16px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

@media (max-width: 720px) {
    .slide-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
    background: var(--color-surface-alt);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

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

        .footer-links a:hover {
            color: var(--color-primary);
        }

.footer-copy {
    width: 100%;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 30px;
    text-align: center;
}

/* ---------- Back to top ---------- */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-primary);
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 90;
}

    .back-to-top.is-visible {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .back-to-top:hover {
        border-color: var(--color-primary);
    }

/* ---------- Scroll-reveal utility (used by main.js) ---------- */
.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .card-grid, .card-grid[data-cols="4"] {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero h1 {
        font-size: 2.2rem;
    }
}

@media (max-width: 720px) {
    .main-nav {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition);
    }

        .main-nav.is-open {
            max-height: 480px;
        }

        .main-nav ul {
            flex-direction: column;
            align-items: flex-start;
            gap: 0;
            padding: 8px 24px 20px;
        }

        .main-nav li {
            width: 100%;
        }

        .main-nav a {
            display: block;
            padding: 12px 0;
            width: 100%;
        }

    .nav-cta {
        display: inline-block;
        margin-top: 8px;
    }

    .nav-toggle {
        display: flex;
    }

    .section {
        padding: 56px 0;
    }

    .hero {
        padding: 72px 0 56px;
    }

    .card-grid, .card-grid[data-cols="2"], .card-grid[data-cols="4"] {
        grid-template-columns: 1fr;
    }

    .band-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}