:root {
    --bg-primary: #050b14;
    --bg-secondary: rgba(7, 17, 31, 0.86);
    --bg-elevated: rgba(11, 26, 47, 0.76);
    --surface-border: rgba(127, 166, 215, 0.2);
    --surface-strong: rgba(147, 197, 253, 0.26);
    --text-primary: #e8f1ff;
    --text-secondary: #a6b8d4;
    --text-muted: #8293ae;
    --accent: #7bdcff;
    --accent-strong: #9ad7ff;
    --success: #9ef6c8;
    --danger: #ff9d9d;
    --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.34);
    --max-width: 1180px;
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --transition: 220ms ease;
    --font-sans: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    color: var(--text-primary);
    background:
        linear-gradient(180deg, rgba(5, 11, 20, 0.72) 0%, rgba(9, 17, 32, 0.78) 44%, rgba(4, 9, 18, 0.88) 100%),
        radial-gradient(circle at top left, rgba(63, 133, 214, 0.16), transparent 34%),
        radial-gradient(circle at 80% 20%, rgba(123, 220, 255, 0.12), transparent 24%),
        url("/static/media/background.gif") center center / cover no-repeat fixed,
        linear-gradient(180deg, #050b14 0%, #091120 44%, #040912 100%);
    background-color: #050b14;
}

body.modal-open {
    overflow: hidden;
}

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

button,
input,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

.site-shell {
    position: relative;
    overflow: hidden;
    min-height: 100vh;
}

.ambient,
.grid-overlay {
    pointer-events: none;
    position: fixed;
    inset: 0;
}

.ambient-one {
    background: radial-gradient(circle at 20% 30%, rgba(32, 83, 151, 0.18), transparent 28%);
    animation: floatAmbient 16s ease-in-out infinite alternate;
}

.ambient-two {
    background: radial-gradient(circle at 76% 18%, rgba(123, 220, 255, 0.12), transparent 22%);
    animation: floatAmbient 18s ease-in-out infinite alternate-reverse;
}

.grid-overlay {
    opacity: 0.16;
    background-image:
        linear-gradient(rgba(123, 220, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(123, 220, 255, 0.08) 1px, transparent 1px);
    background-size: 120px 120px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 92%);
}

.site-header,
.site-footer,
.section {
    width: min(var(--max-width), calc(100% - 2rem));
    margin-inline: auto;
    position: relative;
    z-index: 1;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.4rem 0 1rem;
}

.brand {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.site-nav a,
.nav-contact-button,
.footer-contact-button {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    padding: 0.7rem 1rem;
    border-radius: 999px;
    transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.nav-contact-button:hover,
.nav-contact-button:focus-visible,
.footer-contact-button:hover,
.footer-contact-button:focus-visible {
    color: var(--text-primary);
    border-color: var(--surface-border);
    background: rgba(255, 255, 255, 0.03);
}

.section {
    padding: 3rem 0;
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    padding-top: 4rem;
    padding-bottom: 4rem;
    align-items: center;
}

.eyebrow {
    margin: 0 0 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.78rem;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    font-size: clamp(3.2rem, 10vw, 5.6rem);
    line-height: 0.95;
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    line-height: 1.05;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.1rem;
    margin-bottom: 0.7rem;
}

.hero-subtitle,
.intro-copy {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 44rem;
}

.hero-body,
.content-card p,
.pillar-card p,
.narrative-panel p,
.use-case-details p,
.faq-card p,
.site-footer p,
.signal-list li {
    color: var(--text-secondary);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin: 2rem 0 2.2rem;
    flex-wrap: wrap;
}

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3.2rem;
    padding: 0.9rem 1.3rem;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.primary-button {
    background: linear-gradient(135deg, rgba(123, 220, 255, 0.2), rgba(154, 215, 255, 0.12));
    color: var(--text-primary);
    border-color: rgba(123, 220, 255, 0.28);
    box-shadow: 0 18px 40px rgba(13, 36, 66, 0.32);
}

.secondary-button {
    color: var(--text-primary);
    border-color: var(--surface-border);
    background: rgba(255, 255, 255, 0.03);
}

.primary-button:hover,
.primary-button:focus-visible,
.secondary-button:hover,
.secondary-button:focus-visible,
.floating-contact-button:hover,
.floating-contact-button:focus-visible,
.form-submit:hover,
.form-submit:focus-visible {
    transform: translateY(-1px);
}

.hero-metrics,
.signal-grid,
.card-grid,
.pillar-layout {
    display: grid;
    gap: 1rem;
}

.hero-metrics {
    grid-template-columns: repeat(3, 1fr);
}

.hero-metrics article,
.signal-tile,
.content-card,
.pillar-card,
.narrative-panel,
.use-case-card,
.faq-card,
.status-card,
.modal-panel {
    border: 1px solid var(--surface-border);
    background: linear-gradient(180deg, rgba(10, 22, 41, 0.88), rgba(7, 15, 29, 0.92));
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-xl);
}

.hero-metrics article,
.content-card,
.pillar-card,
.signal-tile,
.faq-card {
    border-radius: var(--radius-md);
    padding: 1.4rem;
}

.hero-metrics span {
    display: block;
    font-size: 1.8rem;
    color: var(--accent-strong);
    margin-bottom: 0.6rem;
    font-weight: 700;
}

.hero-panel {
    display: grid;
    gap: 1rem;
}

.status-card {
    border-radius: var(--radius-lg);
    padding: 1.8rem;
}

.panel-label {
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.76rem;
    margin-bottom: 0.8rem;
}

.signal-list {
    margin: 1rem 0 0;
    padding-left: 1.2rem;
}

.signal-grid {
    grid-template-columns: repeat(2, 1fr);
}

.signal-tile p {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.signal-tile strong {
    font-size: 1.2rem;
}

.section-heading {
    max-width: 44rem;
    margin-bottom: 1.6rem;
}

.align-left {
    margin-bottom: 0;
}

.card-grid,
.pillar-layout {
    grid-template-columns: repeat(3, 1fr);
}

.content-card,
.pillar-card {
    min-height: 100%;
}

.pillar-card span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 2.2rem;
    width: 2.2rem;
    border-radius: 50%;
    background: rgba(123, 220, 255, 0.12);
    color: var(--accent-strong);
    margin-bottom: 1rem;
    font-weight: 700;
}

.narrative-panel {
    border-radius: var(--radius-lg);
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.narrative-panel::after {
    content: "";
    position: absolute;
    inset: auto -10% -40% auto;
    width: 20rem;
    height: 20rem;
    background: radial-gradient(circle, rgba(123, 220, 255, 0.18), transparent 70%);
}

.text-link {
    color: var(--accent-strong);
}

.page-intro {
    padding-top: 4rem;
    padding-bottom: 1rem;
}

.use-case-stack,
.faq-stack {
    display: grid;
    gap: 1.25rem;
}

.use-case-card {
    border-radius: var(--radius-lg);
    padding: 1.8rem;
    display: grid;
    gap: 1.4rem;
}

.use-case-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.4rem;
}

.faq-stack {
    grid-template-columns: repeat(2, 1fr);
}

.site-footer {
    padding: 2rem 0 6rem;
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    border-top: 1px solid rgba(127, 166, 215, 0.12);
    margin-top: 2rem;
}

.footer-mark {
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.floating-contact-button {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 12;
    border: 1px solid rgba(123, 220, 255, 0.24);
    background: rgba(7, 17, 31, 0.82);
    color: var(--text-primary);
    backdrop-filter: blur(14px);
    padding: 0.95rem 1.2rem;
    border-radius: 999px;
    box-shadow: var(--shadow-xl);
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: grid;
    place-items: center;
    padding: 1rem;
    background: rgba(2, 8, 16, 0.72);
    backdrop-filter: blur(8px);
}

.modal-backdrop[hidden] {
    display: none !important;
}

.modal-panel {
    width: min(100%, 42rem);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.icon-button {
    border: 1px solid var(--surface-border);
    background: transparent;
    color: var(--text-primary);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
}

.contact-form {
    display: grid;
    gap: 0.8rem;
}

.contact-form label {
    color: var(--text-secondary);
}

.contact-form label span {
    color: var(--text-muted);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(127, 166, 215, 0.18);
    background: rgba(4, 10, 18, 0.85);
    color: var(--text-primary);
    padding: 0.95rem 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--surface-strong);
    box-shadow: 0 0 0 3px rgba(123, 220, 255, 0.12);
}

.hidden-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}

.form-feedback {
    min-height: 1.5rem;
    margin: 0.25rem 0 0;
    color: var(--text-secondary);
}

.form-feedback.is-error {
    color: var(--danger);
}

.form-feedback.is-success {
    color: var(--success);
}

@keyframes floatAmbient {
    from {
        transform: translate3d(0, 0, 0) scale(1);
    }
    to {
        transform: translate3d(2%, 3%, 0) scale(1.08);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (max-width: 1024px) {
    .hero,
    .card-grid,
    .pillar-layout,
    .use-case-details,
    .faq-stack {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 2.5rem;
    }

    .hero-metrics {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .site-header,
    .site-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .site-nav {
        flex-wrap: wrap;
    }

    h1 {
        font-size: clamp(2.8rem, 15vw, 4.2rem);
    }

    .hero-subtitle,
    .intro-copy {
        font-size: 1.06rem;
    }

    .signal-grid {
        grid-template-columns: 1fr;
    }

    .modal-panel {
        padding: 1.2rem;
    }

    .floating-contact-button {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        text-align: center;
    }
}