/* ============================================
   Sections
   ============================================ */

/* ── Nav ── */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(16, 42, 67, 0.90);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    border-bottom: 1px solid rgba(248, 250, 252, 0.10);
}

.nav__container {
    max-width: var(--container-max);
    height: 72px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-on-dark);
    font-size: 1.08rem;
    font-weight: 800;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.nav__logo-img {
    width: 36px !important;
    height: 36px !important;
    object-fit: cover !important;
    object-position: center !important;
    flex-shrink: 0;
    display: block;
    border-radius: 10px !important;
    overflow: hidden;
    background: transparent !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
}

.nav__links {
    display: flex;
    gap: var(--space-6);
    list-style: none;
}

.nav__link {
    color: rgba(248, 250, 252, 0.62);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: color var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-teal-bright);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-on-dark);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ── Hero (dark navy) ── */
.hero {
    min-height: 100vh;
    padding: 150px var(--container-padding) var(--space-20);
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 78% 18%, rgba(39, 194, 184, 0.20), transparent 34%),
        radial-gradient(circle at 18% 82%, rgba(116, 224, 213, 0.10), transparent 30%),
        linear-gradient(135deg, #16385A 0%, #1D4A73 55%, #102A43 100%);
    color: var(--color-text-on-dark);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(248, 250, 252, 0.024) 1px, transparent 1px),
        linear-gradient(90deg, rgba(248, 250, 252, 0.024) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, black, transparent 80%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    right: -8rem;
    top: 3rem;
    width: 44rem;
    height: 44rem;
    background: radial-gradient(circle, rgba(39, 194, 184, 0.13), transparent 65%);
    pointer-events: none;
}

.hero__container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: var(--container-max);
    min-height: calc(100vh - 230px);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    align-items: center;
    gap: var(--space-16);
}

.hero__copy {
    max-width: 760px;
    min-width: 0;
}

.hero__title {
    margin-bottom: var(--space-6);
    max-width: 850px;
    font-size: var(--text-display);
    font-weight: 800;
    line-height: 1.03;
    letter-spacing: -0.03em;
    background: linear-gradient(175deg, #FFFFFF 0%, rgba(248, 250, 252, 0.97) 44%, rgba(116, 224, 213, 0.82) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    max-width: 640px;
    margin-bottom: var(--space-8);
    color: var(--color-text-on-dark-soft);
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    line-height: 1.82;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.hero__signals {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.hero__signals span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: var(--space-1) var(--space-3);
    border: 1px solid rgba(248, 250, 252, 0.18);
    border-radius: var(--radius-full);
    color: rgba(248, 250, 252, 0.68);
    background: rgba(248, 250, 252, 0.08);
    font-size: var(--text-xs);
    font-weight: 600;
}

/* ── Hero visual (app screenshot) ── */
.hero__visual {
    position: relative;
    width: 100%;
    min-width: 0;
    display: grid;
    place-items: center;
}

.hero__shot {
    width: auto;
    max-width: 100%;
    max-height: min(78vh, 720px);
    height: auto;
    border-radius: var(--radius-xl);
    transform: rotate(2deg);
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.34), 0 0 60px rgba(39, 194, 184, 0.14);
}

/* ── Section defaults (light sections) ── */
.section {
    padding: var(--space-24) var(--container-padding);
    position: relative;
}

.section--origin {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.section--how-it-works {
    background: var(--color-bg-soft);
    border-top: 1px solid rgba(16, 42, 67, 0.08);
}

.section--features {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.section--engineering {
    background:
        radial-gradient(circle at 92% 8%, rgba(39, 194, 184, 0.10), transparent 28%),
        linear-gradient(180deg, var(--color-bg-soft), var(--color-bg));
    border-top: 1px solid var(--color-border);
}

.section--about {
    background: var(--color-bg-mist);
    border-top: 1px solid rgba(16, 42, 67, 0.10);
}

/* ── Section container + header ── */
.section__container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.section__container--narrow {
    max-width: 780px;
}

.section__header {
    max-width: 760px;
    margin-bottom: var(--space-10);
}

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

.section__title {
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
    font-size: var(--text-h1);
    font-weight: 800;
    line-height: 1.06;
    letter-spacing: -0.03em;
}

.section__lead {
    max-width: 680px;
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.82;
}

.section__header--center .section__lead {
    margin: 0 auto;
}

/* ── Origin split layout ── */
.split {
    display: grid;
    grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1.18fr);
    gap: var(--space-16);
    align-items: start;
}

.origin__story {
    display: grid;
    gap: var(--space-5);
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.88;
}

/* ── Workflow grid ── */
.workflow {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-5);
}

.workflow-card {
    min-height: 260px;
}

/* ── Features grid ── */
.features__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-5);
}

.feature-card--wide {
    grid-column: span 2;
}

/* ── App screenshots gallery ── */
.section--screens {
    background:
        radial-gradient(circle at 8% 6%, rgba(39, 194, 184, 0.08), transparent 30%),
        var(--color-bg-soft);
    border-top: 1px solid var(--color-border);
}

.screens__gallery {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 300px));
    justify-content: center;
    gap: var(--space-8);
    align-items: start;
}

.screen-shot {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.screen-shot img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.screen-shot figcaption {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
    text-align: center;
}

/* ── Grading flow diagram panel ── */
.flow-panel {
    margin-top: var(--space-10);
    padding: var(--space-8);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    display: grid;
    grid-template-columns: minmax(240px, 0.85fr) minmax(0, 1.15fr);
    gap: var(--space-10);
    align-items: center;
}

.flow-panel__copy .eyebrow {
    margin-bottom: var(--space-3);
}

.flow-panel__copy h3 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.flow-panel__copy p {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.78;
}

.flow-panel svg {
    width: 100%;
    display: block;
}

/* ── Engineering section ── */
.arch__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-5);
}

/* ── About / Builder ── */
.builder__grid {
    display: grid;
    place-items: center;
    margin-top: var(--space-10);
}

.builder-card {
    position: relative;
    overflow: hidden;
    max-width: 720px;
    width: 100%;
    padding: var(--space-8);
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.builder-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-teal), var(--color-mint));
    opacity: 0.85;
}

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

.builder-card__avatar {
    width: 84px;
    height: 84px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    background: linear-gradient(135deg, var(--color-teal), var(--color-mint));
    color: #04211D;
    font-weight: 800;
    font-size: 1.6rem;
    letter-spacing: 0.02em;
    box-shadow: 0 10px 26px rgba(39, 194, 184, 0.32);
}

.builder-card__role {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-clay);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    margin-bottom: var(--space-2);
}

.builder-card__name {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-5);
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.builder-card__bio {
    margin-bottom: var(--space-4);
    max-width: 560px;
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.85;
}

.builder-card__bio--secondary {
    color: var(--color-text-muted);
}

.builder-card .tags {
    justify-content: center;
    margin-top: var(--space-2);
    margin-bottom: 0;
}

.builder-card__contact {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.builder-card .btn--secondary {
    background: transparent;
    color: var(--color-navy-700);
    border-color: rgba(16, 42, 67, 0.28);
    backdrop-filter: none;
}

.builder-card .btn--secondary:hover {
    background: rgba(16, 42, 67, 0.06);
    border-color: var(--color-navy-700);
}

/* ── Footer (dark) ── */
.footer {
    padding: var(--space-12) var(--container-padding);
    border-top: 1px solid rgba(248, 250, 252, 0.10);
    background: var(--color-navy-900);
}

.footer__container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.footer__brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-on-dark);
    font-weight: 800;
    letter-spacing: -0.01em;
}

.footer__copyright {
    max-width: 720px;
    color: var(--color-text-on-dark-muted);
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    text-align: right;
}

.footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-5);
}

.footer__privacy {
    color: var(--color-text-on-dark-muted);
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--transition-fast);
}

.footer__privacy:hover {
    color: var(--color-teal-bright);
}

/* ============================================
   Legal pages (privacy / terms)
   ============================================ */

.legal-header {
    padding: 150px var(--container-padding) var(--space-10);
    background: linear-gradient(135deg, #16385A 0%, #1D4A73 55%, #102A43 100%);
    color: var(--color-text-on-dark);
}

.legal-header__container {
    max-width: 820px;
    margin: 0 auto;
}

.legal-header .eyebrow {
    color: var(--color-teal-bright);
}

.legal-header .eyebrow__dot {
    background: var(--color-teal-bright);
    box-shadow: 0 0 16px rgba(39, 194, 184, 0.6);
}

.legal-header__back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    color: var(--color-text-on-dark-soft);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
}

.legal-header__back:hover {
    color: var(--color-teal-bright);
}

.legal-header__title {
    font-size: clamp(2rem, 4.5vw, 2.9rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.08;
    margin-bottom: var(--space-4);
}

.legal-header__meta {
    color: var(--color-text-on-dark-muted);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.legal {
    padding: var(--space-16) var(--container-padding) var(--space-24);
    background: var(--color-bg);
}

.legal__container {
    max-width: 820px;
    margin: 0 auto;
}

.legal__intro {
    padding: var(--space-6);
    margin-bottom: var(--space-10);
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-teal);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 1.02rem;
    line-height: 1.85;
    box-shadow: var(--shadow-card);
}

.legal__container h2 {
    margin-top: var(--space-12);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.015em;
    color: var(--color-text-primary);
}

.legal__container h2:first-of-type {
    margin-top: 0;
}

.legal__container p {
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.85;
}

.legal__container ul,
.legal__container ol {
    margin: 0 0 var(--space-4) var(--space-6);
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.85;
}

.legal__container li {
    margin-bottom: var(--space-2);
}

.legal__container li p {
    margin-bottom: 0;
}

.legal__container a {
    color: var(--color-navy-700);
    text-decoration: underline;
    text-decoration-color: rgba(16, 42, 67, 0.28);
    text-underline-offset: 3px;
}

.legal__container a:hover {
    color: var(--color-teal);
    text-decoration-color: currentColor;
}

.legal__container strong {
    color: var(--color-text-primary);
    font-weight: 700;
}

.legal__container code {
    font-family: var(--font-mono);
    font-size: 0.92em;
    background: rgba(16, 42, 67, 0.06);
    padding: 0.1em 0.4em;
    border-radius: 4px;
}

/* Draft placeholders like [insert date] - flagged for the author before publishing */
.legal__placeholder {
    background: rgba(242, 184, 75, 0.22);
    border-bottom: 1px dashed var(--color-gold);
    color: #8A5F0E;
    padding: 0 3px;
    border-radius: 3px;
    font-weight: 600;
}

.legal__table-wrap {
    overflow-x: auto;
    margin-bottom: var(--space-6);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.legal__container table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
    background: #FFFFFF;
}

.legal__container th,
.legal__container td {
    text-align: left;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    vertical-align: top;
}

.legal__container th {
    color: var(--color-text-primary);
    font-weight: 700;
    background: rgba(16, 42, 67, 0.04);
}

.legal__container tr:last-child td {
    border-bottom: none;
}

/* ── Support page: help topic cards ── */
.support-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-5);
    margin: 0 0 var(--space-6);
}

.support-topic {
    padding: var(--space-5);
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

.support-topic h3 {
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.support-topic p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

.support-appinfo {
    margin-top: var(--space-12);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}