/**
 * Scroll The Word — Landing Page Styles
 * ──────────────────────────────────────
 */

/* Responsive button text */
.hide-mobile { display: inline; }
.show-mobile { display: none; }
@media (max-width: 768px) {
    .hide-mobile { display: none; }
    .show-mobile { display: inline; }
}

/* ── Page shell ──────────────────────────────────────────────────────────────── */
.landing-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--color-bg);
}

/* ── Top nav bar ─────────────────────────────────────────────────────────────── */
.landing-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}
.landing-nav > a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.landing-nav__actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ── Hero section ────────────────────────────────────────────────────────────── */
.landing-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 80px 24px 72px;
    background: var(--color-hero-gradient), url('../images/background.jpg') center / cover no-repeat;
    border-bottom: 1px solid var(--color-border);
}

.landing-hero__logo {
    margin-bottom: 24px;
}

.landing-hero__logo .logo-text {
    font-size: clamp(2.25rem, 7vw, 4rem);
    letter-spacing: -0.03em;
}
.landing-hero__logo .logo-text em {
    color: var(--color-primary);
}

.landing-hero__tagline {
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    color: var(--color-text-2);
    font-weight: 400;
    max-width: 545px;
    line-height: 1.5;
    margin-bottom: 40px;
}

/* ── Search bar ──────────────────────────────────────────────────────────────── */
.landing-search {
    width: 100%;
    max-width: 540px;
    display: flex;
    align-items: center;
    background-color: var(--color-surface);
    border: 1.5px solid var(--color-border-strong);
    border-radius: 999px;
    padding: 6px 8px 6px 22px;
    box-shadow: var(--shadow-md);
    transition: border-color var(--transition), box-shadow var(--transition);
    margin-bottom: 32px;
}

.landing-search:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light), var(--shadow-md);
}

.landing-search__input {
    flex: 1;
    border: none;
    outline: none;
    font-family: var(--font-ui);
    font-size: var(--text-base);
    color: var(--color-text);
    background: transparent;
    min-width: 0;
}

.landing-search__input::placeholder {
    color: var(--color-text-3);
}

.landing-search__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 22px;
    background-color: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 999px;
    font-family: var(--font-ui);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
}

.landing-search__btn:hover {
    background-color: var(--color-primary-hover);
}

.landing-search__btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2.5;
    flex-shrink: 0;
}

.landing-hero__cta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.landing-hero__cta .btn {
    padding: 12px 28px;
    font-size: var(--text-base);
}

/* ── Sections grid ───────────────────────────────────────────────────────────── */
.landing-sections {
    flex: 1;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 64px 24px 80px;
    display: flex;
    flex-direction: column;
    gap: 64px;
}

/* ── Section header ──────────────────────────────────────────────────────────── */
.section-header {
    margin-bottom: 28px;
}

.section-label {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.section-title {
    font-size: clamp(1.4rem, 3vw, 1.875rem);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 10px;
}

.section-desc {
    font-size: var(--text-base);
    color: var(--color-text-2);
    max-width: 580px;
    line-height: 1.7;
}

/* ── "What is STW?" section ──────────────────────────────────────────────────── */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.about-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--shadow-sm);
}

.about-card__icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.about-card__icon svg {
    width: 24px;
    height: 24px;
    fill: var(--color-primary);
    stroke: none;
}

.about-card__title {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
}

.about-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-2);
    line-height: 1.65;
}

.inline-icon {
    display: inline-block;
    width: 1.1em;
    height: 1.1em;
    vertical-align: -0.15em;
    fill: var(--color-primary);
}

/* ── Featured Studies section ────────────────────────────────────────────────── */
.studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.landing-study-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition);
    cursor: pointer;
    text-decoration: none;
}

.landing-study-card__img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
}

.landing-study-card__body {
    padding: 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.landing-study-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.landing-study-card__label {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
}

.landing-study-card__title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
}

.landing-study-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-2);
    line-height: 1.6;
    flex: 1;
    margin: 0;
}

.landing-study-card__link {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary);
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.landing-study-card__link svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2.5;
    transition: transform var(--transition);
}

.landing-study-card:hover .landing-study-card__link svg {
    transform: translateX(3px);
}

/* ── Community & Scroll Anywhere (2-up layout) ───────────────────────────────── */
.two-up {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.feature-block {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow-sm);
}

.feature-block--accent {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    border-color: transparent;
    color: #fff;
}

.feature-block--accent .section-label {
    color: rgba(255,255,255,0.75);
}

.feature-block--accent .section-title {
    color: #fff;
}

.feature-block--accent .section-desc {
    color: rgba(255,255,255,0.85);
}

.feature-block--accent .btn--ghost {
    border-color: rgba(255,255,255,0.5);
    color: #fff;
}

.feature-block--accent .btn--ghost:hover {
    background-color: rgba(255,255,255,0.15);
}

.feature-block__icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-block--accent .feature-block__icon {
    background-color: rgba(255,255,255,0.2);
}

.feature-block__icon svg {
    width: 28px;
    height: 28px;
    fill: var(--color-primary);
    stroke: none;
}

.feature-block--accent .feature-block__icon svg {
    fill: #fff;
}

/* ── Coming soon badge ───────────────────────────────────────────────────────── */
.badge-soon {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background-color: var(--color-accent-fill);
    color: var(--color-accent);
    padding: 3px 10px;
    border-radius: 999px;
    align-self: flex-start;
}

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.landing-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 24px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.landing-footer__copy {
    font-size: var(--text-sm);
    color: var(--color-text-3);
}

.landing-footer__links {
    display: flex;
    gap: 20px;
}

.landing-footer__links a {
    font-size: var(--text-sm);
    color: var(--color-text-3);
    text-decoration: none;
    transition: color var(--transition);
}

.landing-footer__links a:hover {
    color: var(--color-primary);
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 767px) {
    .landing-nav {
        padding: 14px 16px;
    }

    .landing-hero {
        padding: 56px 20px 52px;
    }

    .two-up {
        grid-template-columns: 1fr;
    }

    .landing-sections {
        padding: 48px 16px 64px;
        gap: 48px;
    }

    .landing-footer {
        padding: 20px 16px;
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 479px) {
    .landing-search {
        padding: 5px 6px 5px 16px;
    }

    .landing-search__input::placeholder {
        font-size: var(--text-sm);
    }

    .landing-search__btn {
        padding: 9px 14px;
    }

    .landing-search__btn-label {
        display: none;
    }
}