/* Betik Labs — brand-aligned light theme (navy + blue wordmark) */
:root {
    --navy: #1a335a;
    --blue: #1a73e8;
    --blue-hover: #1557b0;
    --bg: #eef2f7;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --border: rgba(26, 51, 90, 0.12);
    --text: #1a335a;
    --text-muted: #5c6d8c;
    --accent: #1a73e8;
    --accent-soft: rgba(26, 115, 232, 0.14);
    --accent-glow: rgba(26, 115, 232, 0.28);
    --danger: #c5221f;
    --success: #1e8e3e;
    --font: "Inter", system-ui, -apple-system, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 12px 40px rgba(26, 51, 90, 0.08);
    --shadow-lg: 0 24px 64px rgba(26, 51, 90, 0.12);
    --max: 1080px;
    --narrow: 560px;
    --header-bg: #1a335a;
    --header-nav-muted: rgba(255, 255, 255, 0.72);
    --header-border: rgba(255, 255, 255, 0.12);
    --footer-bg: #1a335a;
    --footer-text: rgba(255, 255, 255, 0.92);
    --footer-muted: rgba(255, 255, 255, 0.65);
}

[data-theme="dark"] {
    --navy: #d6e3ff;
    --blue: #7eb1ff;
    --blue-hover: #9ac2ff;
    --bg: #0d1422;
    --bg-elevated: #131d2e;
    --bg-card: #131d2e;
    --border: rgba(166, 189, 230, 0.2);
    --text: #dbe7ff;
    --text-muted: #9db2d6;
    --accent: #7eb1ff;
    --accent-soft: rgba(126, 177, 255, 0.22);
    --accent-glow: rgba(126, 177, 255, 0.24);
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.45);
    --header-bg: #0f1c33;
    --header-nav-muted: rgba(219, 231, 255, 0.78);
    --header-border: rgba(166, 189, 230, 0.2);
    --footer-bg: #0f1c33;
    --footer-text: rgba(219, 231, 255, 0.94);
    --footer-muted: rgba(219, 231, 255, 0.7);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font);
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    background-image:
        radial-gradient(ellipse 100% 80% at 50% -30%, rgba(26, 115, 232, 0.08), transparent 55%),
        radial-gradient(ellipse 60% 50% at 100% 20%, rgba(26, 51, 90, 0.06), transparent 45%);
}

[data-theme="dark"] body {
    background-image:
        radial-gradient(ellipse 100% 80% at 50% -30%, rgba(126, 177, 255, 0.08), transparent 55%),
        radial-gradient(ellipse 60% 50% at 100% 20%, rgba(61, 90, 134, 0.12), transparent 45%);
}

img {
    max-width: 100%;
    height: auto;
}

img.logo__img {
    max-width: none;
    flex-shrink: 0;
}

a {
    color: var(--accent);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
}

a:hover {
    color: var(--blue-hover);
}

.skip-link {
    position: absolute;
    left: -9999px;
    z-index: 999;
    padding: 0.75rem 1rem;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.wrap {
    width: min(100% - 2.5rem, var(--max));
    margin-inline: auto;
}

.wrap--narrow {
    max-width: var(--narrow);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--header-border);
    background: var(--header-bg);
}

.site-header__inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4.5rem;
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    align-self: center;
    flex: 0 0 auto;
    line-height: 0;
    text-decoration: none;
}

.logo:hover {
    opacity: 0.92;
}

.logo__img {
    display: block;
    width: 186px;
    height: 35px;
    object-fit: contain;
    object-position: left center;
}

@media (max-width: 480px) {
    .logo__img {
        width: 158px;
        height: 30px;
    }
}

.site-nav__list {
    display: flex;
    gap: 0.25rem 1.75rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav a {
    color: var(--header-nav-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.35rem 0;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.site-nav a:hover,
.site-nav a.is-active {
    color: #fff;
    border-bottom-color: #8ab4f8;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: 1px solid var(--header-border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.08);
    cursor: pointer;
}

.nav-toggle__bar {
    display: block;
    width: 1.25rem;
    height: 2px;
    margin: 0 auto;
    background: #fff;
    border-radius: 1px;
    box-shadow: 0 6px 0 #fff, 0 -6px 0 #fff;
}

@media (max-width: 720px) {
    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        padding: 1rem 1.25rem 1.25rem;
        background: var(--header-bg);
        border-bottom: 1px solid var(--header-border);
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
        display: none;
    }

    .site-header__actions {
        gap: 0.55rem;
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav__list {
        flex-direction: column;
        gap: 0;
    }

    .site-nav a {
        display: block;
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--header-border);
    }

    .site-nav li:last-child a {
        border-bottom: none;
    }
}

/* Hero */
.hero {
    position: relative;
    padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 5vw, 3.5rem);
    overflow: hidden;
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 20%, transparent 70%);
    opacity: 0.65;
    pointer-events: none;
}

.hero__inner {
    position: relative;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0 0 1rem;
}

.hero__title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.03em;
    margin: 0 0 1.25rem;
    max-width: 14ch;
    color: var(--navy);
}

.hero__accent {
    color: var(--accent);
    font-style: italic;
    font-weight: 600;
}

.hero__lead {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 40ch;
    margin: 0 0 2rem;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.25rem;
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn:active {
    transform: scale(0.98);
}

.btn--primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12) inset, 0 8px 24px var(--accent-glow);
}

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

.btn--ghost {
    background: transparent;
    color: var(--navy);
    border-color: var(--border);
}

.btn--ghost:hover {
    border-color: rgba(26, 51, 90, 0.28);
    background: rgba(26, 115, 232, 0.06);
}

.btn--lg {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
}

/* Sections */
.section {
    padding: clamp(3rem, 6vw, 5rem) 0;
}

.section--alt {
    background: var(--bg-elevated);
    border-block: 1px solid var(--border);
}

.section--tight {
    padding-top: 0;
    padding-bottom: clamp(4rem, 8vw, 6rem);
}

.section__head {
    margin-bottom: 2.5rem;
    max-width: 58ch;
}

.section__title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0 0 0.75rem;
    color: var(--navy);
}

.section__intro {
    margin: 0;
    color: var(--text-muted);
    font-size: 1.0625rem;
}

.cards {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    border-color: rgba(26, 115, 232, 0.35);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card__icon {
    font-size: 1.25rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
    font-family: var(--font-mono);
}

.card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--navy);
}

.card__text {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.split {
    display: grid;
    gap: 2.5rem;
    align-items: center;
}

@media (min-width: 880px) {
    .split {
        grid-template-columns: 1fr 1fr;
        gap: 3.5rem;
    }
}

.split__text .section__title {
    margin-bottom: 1rem;
}

.split__text p {
    margin: 0 0 1.25rem;
    color: var(--text-muted);
}

.checks {
    margin: 0;
    padding-left: 1.25rem;
    color: var(--text-muted);
}

.checks li {
    margin-bottom: 0.5rem;
}

.checks li::marker {
    color: var(--accent);
}

.code-panel {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    padding: 1.5rem;
    background: #122747;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), var(--shadow-lg);
}

.code-panel__line {
    display: block;
}

.code-panel__indent {
    padding-left: 1rem;
}

.code-panel__kw {
    color: #a8c7fa;
}

.code-panel__name {
    color: #81c995;
}

.code-panel__str {
    color: #fdd663;
}

/* CTA */
.cta {
    text-align: center;
}

.cta__inner {
    padding: clamp(2.5rem, 5vw, 3.5rem);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 4px);
    background: linear-gradient(180deg, rgba(126, 177, 255, 0.14) 0%, var(--bg-elevated) 100%);
    box-shadow: var(--shadow);
}

.cta__title {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    margin: 0 0 0.5rem;
    color: var(--navy);
}

.cta__text {
    margin: 0 auto 1.5rem;
    max-width: 42ch;
    color: var(--text-muted);
}

/* Page */
.page-head {
    padding: clamp(2.5rem, 6vw, 4rem) 0 1rem;
}

.page-head__title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin: 0 0 0.75rem;
    color: var(--navy);
}

.page-head__lead {
    margin: 0;
    max-width: 48ch;
    color: var(--text-muted);
}

.page-head__lead a {
    font-weight: 500;
}

/* Contact */
.contact-section {
    padding-top: 1.5rem;
}

.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: clamp(1.25rem, 3vw, 2rem);
    align-items: start;
}

.contact-panel,
.contact-form-card {
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 2px);
    background: linear-gradient(180deg, var(--bg-elevated) 0%, color-mix(in srgb, var(--bg-elevated) 88%, #ffffff 12%) 100%);
    box-shadow: var(--shadow);
}

.contact-panel {
    padding: clamp(1.25rem, 3vw, 1.75rem);
}

.contact-panel__eyebrow {
    margin: 0 0 0.35rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.contact-panel__title {
    margin: 0 0 0.75rem;
    font-size: clamp(1.2rem, 2vw, 1.45rem);
    color: var(--navy);
}

.contact-panel__text {
    margin: 0 0 1rem;
    color: var(--text-muted);
}

.contact-panel__list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.85rem;
    font-size: 0.9375rem;
    color: var(--text);
}

.contact-panel__list strong {
    color: var(--navy);
}

.contact-form-card {
    padding: clamp(1.25rem, 3vw, 1.75rem);
}

/* Form */
.notice {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
}

.notice--ok {
    background: rgba(30, 142, 62, 0.1);
    border: 1px solid rgba(30, 142, 62, 0.28);
    color: #137333;
}

.notice--err {
    background: rgba(197, 34, 31, 0.08);
    border: 1px solid rgba(197, 34, 31, 0.28);
    color: #9c1b19;
}

.notice ul {
    margin: 0;
    padding-left: 1.25rem;
}

.form__row {
    margin-bottom: 1.25rem;
}

.form__label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text-muted);
}

.form__input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font);
    font-size: 1rem;
    color: var(--text);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form__input::placeholder {
    color: var(--text-muted);
    opacity: 0.9;
}

.form__input:focus {
    outline: none;
    border-color: rgba(26, 115, 232, 0.55);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form__textarea {
    resize: vertical;
    min-height: 140px;
}

.form__actions {
    margin-top: 1.5rem;
}

@media (max-width: 860px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }
}

[data-theme="dark"] .contact-panel,
[data-theme="dark"] .contact-form-card {
    background: linear-gradient(180deg, #1a2640 0%, #131d2f 100%);
    border-color: rgba(166, 189, 230, 0.24);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.34);
}

[data-theme="dark"] .contact-panel__text,
[data-theme="dark"] .contact-panel__list,
[data-theme="dark"] .form__label {
    color: #c5d6f3;
}

[data-theme="dark"] .form__input {
    background: #0f1c33;
    border-color: rgba(166, 189, 230, 0.28);
    color: #e3edff;
}

[data-theme="dark"] .notice--ok {
    color: #9ee6b1;
    border-color: rgba(107, 221, 141, 0.45);
    background: rgba(30, 142, 62, 0.18);
}

[data-theme="dark"] .notice--err {
    color: #ffc2c1;
    border-color: rgba(255, 145, 142, 0.42);
    background: rgba(197, 34, 31, 0.2);
}

/* Footer */
.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--footer-bg);
    padding: 2rem 0;
    margin-top: auto;
}

.site-footer__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-footer__brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.site-footer__copy,
.site-footer__domain {
    margin: 0;
    font-size: 0.875rem;
    color: var(--footer-muted);
}

.site-footer__domain {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--footer-text);
    opacity: 0.85;
}

.site-footer__link {
    color: var(--footer-text);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s ease, opacity 0.15s ease;
}

.site-footer__link:hover {
    border-bottom-color: currentColor;
    opacity: 1;
}

.site-footer__copy {
    color: var(--footer-muted);
}

body {
    display: flex;
    flex-direction: column;
}

/* Privacy Policy */
.policy-card {
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 2px);
    background: linear-gradient(180deg, var(--bg-elevated) 0%, color-mix(in srgb, var(--bg-elevated) 88%, #ffffff 12%) 100%);
    box-shadow: var(--shadow);
    padding: clamp(1.25rem, 3vw, 2rem);
    width: 100%;
}

.policy-card__title {
    margin: 0 0 0.4rem;
    color: var(--navy);
    font-size: clamp(1.35rem, 2.2vw, 1.7rem);
}

.policy-card__meta {
    margin: 0 0 1rem;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.policy-card__intro {
    margin: 0 0 1.25rem;
    color: var(--text);
}

.policy-lang-switch {
    margin-top: 0.85rem;
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.2rem;
    background: var(--bg-elevated);
}

.policy-lang-switch__item {
    padding: 0.28rem 0.75rem;
    border-radius: 999px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 600;
}

.policy-lang-switch__item.is-active {
    background: var(--accent-soft);
    color: var(--accent);
}

.policy-block + .policy-block {
    margin-top: 1.1rem;
    padding-top: 1.1rem;
    border-top: 1px dashed var(--border);
}

.policy-block h3 {
    margin: 0 0 0.35rem;
    font-size: 1rem;
    color: var(--navy);
}

.policy-block p {
    margin: 0;
    color: var(--text-muted);
}

.policy-list {
    margin: 0.35rem 0 0;
    padding-left: 1.15rem;
}

.policy-list li + li {
    margin-top: 0.35rem;
}

[data-theme="dark"] .policy-card {
    background: linear-gradient(180deg, #1a2640 0%, #131d2f 100%);
    border-color: rgba(166, 189, 230, 0.24);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.34);
}

[data-theme="dark"] .policy-lang-switch {
    border-color: rgba(166, 189, 230, 0.24);
    background: #131d2f;
}

[data-theme="dark"] .policy-block p,
[data-theme="dark"] .policy-card__meta,
[data-theme="dark"] .policy-lang-switch__item {
    color: #c5d6f3;
}