/*
The AI Cooperative initial website
Palette: blues, greys and warm whites for trust, public-interest infrastructure and transparency.
*/

:root {
    --navy-950: #10263b;
    --navy-900: #183b5b;
    --navy-800: #24587d;
    --blue-700: #2f6f9f;
    --blue-600: #3a86bd;
    --blue-100: #dbeef9;
    --slate-900: #17222d;
    --slate-700: #405467;
    --slate-500: #6c7c8a;
    --slate-200: #d7dee5;
    --slate-100: #edf2f6;
    --warm-50: #fbfaf6;
    --warm-100: #f5f1e8;
    --white: #ffffff;
    --green-700: #39735f;
    --green-100: #e2f1ea;
    --amber-100: #f7ecd2;
    --amber-700: #8b6424;
    --border: #d8e0e8;
    --shadow: 0 24px 70px rgba(16, 38, 59, 0.12);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(58, 134, 189, 0.14), transparent 34rem),
        linear-gradient(180deg, var(--warm-50) 0%, #f7fbfd 48%, var(--white) 100%);
    color: var(--slate-900);
    line-height: 1.6;
}

a {
    color: var(--blue-700);
}

a:hover {
    color: var(--navy-900);
}

.container {
    width: min(1280px, calc(100% - 40px));
    margin: 0 auto;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 12px;
    background: var(--navy-900);
    color: var(--white);
    padding: 10px 14px;
    z-index: 1000;
}

.skip-link:focus {
    left: 12px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(251, 250, 246, 0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(216, 224, 232, 0.9);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--slate-900);
    flex: 0 0 auto;
    min-width: 250px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--navy-900), var(--blue-600));
    color: var(--white);
    font-weight: 800;
    letter-spacing: -0.03em;
    box-shadow: 0 10px 28px rgba(24, 59, 91, 0.25);
}

.brand-text {
    display: grid;
    gap: 1px;
}

.brand-name {
    font-weight: 800;
    letter-spacing: -0.03em;
    font-size: 1.04rem;
    line-height: 1.2;
    white-space: nowrap;
}

.brand-line {
    color: var(--slate-500);
    font-size: 0.82rem;
    line-height: 1.35;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 3px;
    flex-wrap: nowrap;
    justify-content: flex-end;
    min-width: 0;
}

.site-nav a {
    display: inline-flex;
    padding: 8px 10px;
    border-radius: 999px;
    color: var(--slate-700);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 650;
    white-space: nowrap;
}

.site-nav a:hover,
.site-nav a.active {
    background: var(--blue-100);
    color: var(--navy-900);
}

.nav-toggle {
    display: none;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--navy-900);
    border-radius: 999px;
    padding: 9px 13px;
    font-weight: 700;
}

.hero {
    padding: 82px 0 58px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
    gap: 42px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 18px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--green-100);
    color: var(--green-700);
    font-weight: 800;
    font-size: 0.88rem;
}

h1,
h2,
h3 {
    color: var(--navy-950);
    line-height: 1.12;
}

h1 {
    margin: 0;
    font-size: clamp(2.75rem, 6vw, 5.6rem);
    letter-spacing: -0.07em;
}

h2 {
    font-size: clamp(2rem, 3.6vw, 3.1rem);
    letter-spacing: -0.055em;
    margin: 0 0 18px;
}

h3 {
    font-size: 1.28rem;
    letter-spacing: -0.03em;
    margin: 0 0 10px;
}

.hero-lede {
    margin: 22px 0 0;
    font-size: clamp(1.16rem, 2vw, 1.42rem);
    color: var(--slate-700);
    max-width: 760px;
}

.hero-actions,
.section-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 18px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 800;
    text-decoration: none;
}

.button-primary {
    background: var(--navy-900);
    color: var(--white);
    box-shadow: 0 12px 28px rgba(24, 59, 91, 0.2);
}

.button-primary:hover {
    background: var(--navy-950);
    color: var(--white);
}

.button-secondary {
    background: var(--white);
    color: var(--navy-900);
    border-color: var(--border);
}

.button-secondary:hover {
    background: var(--blue-100);
    color: var(--navy-900);
}

.card {
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(216, 224, 232, 0.95);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.hero-card {
    padding: 28px;
}

.metric-list {
    display: grid;
    gap: 14px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.metric-list li {
    display: grid;
    gap: 4px;
    padding: 16px;
    border-radius: var(--radius-md);
    background: var(--slate-100);
}

.metric-list strong {
    color: var(--navy-900);
    font-size: 1.04rem;
}

.section {
    padding: 62px 0;
}

.section-alt {
    background: rgba(237, 242, 246, 0.56);
    border-top: 1px solid rgba(216, 224, 232, 0.75);
    border-bottom: 1px solid rgba(216, 224, 232, 0.75);
}

.section-header {
    max-width: 800px;
    margin-bottom: 32px;
}

.section-header p {
    color: var(--slate-700);
    font-size: 1.08rem;
    margin: 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.info-card {
    padding: 24px;
}

.info-card p {
    margin: 0;
    color: var(--slate-700);
}

.info-card ul {
    margin: 12px 0 0;
    padding-left: 20px;
    color: var(--slate-700);
}

.callout {
    padding: 28px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--navy-900), var(--blue-700));
    color: var(--white);
    box-shadow: var(--shadow);
}

.callout h2,
.callout h3 {
    color: var(--white);
}

.callout p {
    color: rgba(255, 255, 255, 0.88);
}

.warning {
    background: var(--amber-100);
    border: 1px solid rgba(139, 100, 36, 0.25);
    color: #523a14;
    padding: 18px;
    border-radius: var(--radius-md);
}

.page-hero {
    padding: 62px 0 30px;
}

.page-hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.4rem);
}

.content-block {
    max-width: 880px;
}

.content-block p,
.content-block li {
    color: var(--slate-700);
    font-size: 1.04rem;
}

.content-block hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 34px 0;
}

.principle-list {
    display: grid;
    gap: 16px;
    counter-reset: principles;
    padding: 0;
    list-style: none;
}

.principle-list li {
    counter-increment: principles;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--white);
}

.principle-list li::before {
    content: counter(principles, decimal-leading-zero);
    display: inline-flex;
    margin-bottom: 10px;
    color: var(--blue-700);
    font-weight: 900;
}

.form-card {
    padding: 28px;
}

.form-grid {
    display: grid;
    gap: 16px;
}

.form-row {
    display: grid;
    gap: 7px;
}

label {
    font-weight: 800;
    color: var(--navy-950);
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 13px;
    font: inherit;
    background: var(--white);
    color: var(--slate-900);
}

textarea {
    min-height: 130px;
    resize: vertical;
}

.form-note {
    color: var(--slate-500);
    font-size: 0.92rem;
    margin: 0;
}

.timeline {
    display: grid;
    gap: 16px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 145px minmax(0, 1fr);
    gap: 18px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--white);
}

.timeline-stage {
    color: var(--blue-700);
    font-weight: 900;
}

.faq-list {
    display: grid;
    gap: 16px;
}

.faq-item {
    padding: 22px;
    border-radius: var(--radius-md);
    background: var(--white);
    border: 1px solid var(--border);
}

.faq-item h2 {
    font-size: 1.24rem;
    margin-bottom: 8px;
}

.faq-item p {
    margin: 0;
    color: var(--slate-700);
}

.success-message,
.error-message {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    margin: 18px 0;
}

.success-message {
    background: var(--green-100);
    border: 1px solid rgba(57, 115, 95, 0.28);
    color: #224f40;
}

.error-message {
    background: #fde8e5;
    border: 1px solid rgba(217, 45, 32, 0.25);
    color: #7a1f17;
}

.checkbox-row label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-weight: 650;
    color: var(--slate-700);
}

.checkbox-row input[type="checkbox"] {
    width: auto;
    margin-top: 6px;
    flex: 0 0 auto;
}

.site-footer {
    margin-top: 48px;
    padding: 42px 0 20px;
    background: var(--navy-950);
    color: rgba(255, 255, 255, 0.82);
}

.site-footer h2,
.site-footer h3 {
    color: var(--white);
}

.site-footer a {
    color: var(--blue-100);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr 1fr;
    gap: 28px;
}

.footer-small {
    font-size: 0.93rem;
}

.footer-bottom {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 1180px) {
    .brand {
        min-width: 205px;
    }

    .brand-line {
        display: none;
    }

    .site-nav a {
        font-size: 0.86rem;
        padding: 7px 8px;
    }
}

@media (max-width: 980px) {
    .header-inner {
        align-items: flex-start;
        padding: 16px 0;
    }

    .brand-line {
        display: inline;
    }

    .nav-toggle {
        display: inline-flex;
        margin-top: 6px;
    }

    .site-nav {
        display: none;
        position: absolute;
        left: 20px;
        right: 20px;
        top: 76px;
        padding: 12px;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        background: var(--white);
        box-shadow: var(--shadow);
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .site-nav.open {
        display: flex;
    }

    .hero-grid,
    .grid-2,
    .grid-3,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .container {
        width: min(100% - 28px, 1120px);
    }

    .brand-line {
        display: none;
    }

    .hero {
        padding-top: 46px;
    }

    .section {
        padding: 44px 0;
    }
}