:root {
    --color-ink: #080a12;
    --color-muted: #5f6676;
    --color-line: #e4e7ef;
    --color-surface: #ffffff;
    --color-soft: #f6f8fb;
    --color-violet: #5638e6;
    --color-violet-dark: #4126c0;
    --color-cyan: #25c6da;
    --color-lime: #b9f27c;
    --shadow-soft: 0 24px 80px rgba(8, 10, 18, 0.12);
    --shadow-card: 0 16px 40px rgba(28, 34, 48, 0.08);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --nav-height: 76px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--color-ink);
    background: var(--color-soft);
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
}

img {
    display: block;
    max-width: 100%;
}

.skip-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 2000;
    padding: 0.75rem 1rem;
    color: #fff;
    background: var(--color-ink);
    border-radius: var(--radius-sm);
    transform: translateY(-150%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-nav {
    min-height: var(--nav-height);
    background: rgba(255, 255, 255, 0.88);
    border-bottom: 1px solid rgba(228, 231, 239, 0.9);
    backdrop-filter: blur(18px);
    transition: box-shadow 0.2s ease, background 0.2s ease;
}

.site-nav.is-scrolled {
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 12px 32px rgba(8, 10, 18, 0.08);
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--color-ink);
    font-weight: 800;
    letter-spacing: 0;
    text-decoration: none;
}

.brand-icon {
    display: inline-grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--color-ink), var(--color-violet));
    border-radius: 50%;
    font-weight: 900;
    line-height: 1;
}

.navbar .nav-link {
    color: #3a4050;
    font-size: 0.95rem;
    font-weight: 700;
    padding: 0.65rem 0.85rem;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: var(--color-violet);
}

.navbar-toggler {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
}

.nav-action {
    display: inline-flex;
    align-items: center;
    min-height: 2.45rem;
    padding-right: 1rem;
    padding-left: 1rem;
    border-radius: var(--radius-sm);
    font-weight: 800;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 800;
}

.btn-primary {
    background: var(--color-violet);
    border-color: var(--color-violet);
    box-shadow: 0 12px 24px rgba(86, 56, 230, 0.22);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-violet-dark);
    border-color: var(--color-violet-dark);
}

.btn-outline-dark:hover,
.btn-outline-dark:focus {
    background: var(--color-ink);
    border-color: var(--color-ink);
}

.app-shell {
    min-height: 60vh;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.24s ease, transform 0.24s ease;
}

.app-shell.is-ready {
    opacity: 1;
    transform: translateY(0);
}

.hero-section {
    position: relative;
    overflow: hidden;
    padding: calc(var(--nav-height) + 5rem) 0 5rem;
    background:
        radial-gradient(circle at 80% 18%, rgba(185, 242, 124, 0.34), transparent 22rem),
        linear-gradient(180deg, #fff 0%, #eef8fb 54%, #f7f7ff 100%);
}

.hero-section::after {
    position: absolute;
    right: -7rem;
    bottom: -9rem;
    width: 30rem;
    height: 30rem;
    content: "";
    background: radial-gradient(circle, rgba(86, 56, 230, 0.16), transparent 68%);
    pointer-events: none;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--color-violet);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.eyebrow::before {
    width: 0.55rem;
    height: 0.55rem;
    content: "";
    background: var(--color-cyan);
    border-radius: 50%;
}

.hero-title,
.page-title {
    max-width: 13ch;
    margin-bottom: 1.25rem;
    font-size: clamp(2.8rem, 7vw, 6rem);
    font-weight: 900;
    line-height: 0.95;
    letter-spacing: 0;
}

.hero-copy,
.page-copy,
.section-copy {
    max-width: 42rem;
    color: var(--color-muted);
    font-size: 1.1rem;
    line-height: 1.75;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 2rem;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    max-width: 34rem;
    margin-top: 2rem;
}

.hero-metrics div,
.stat-panel,
.feature-card,
.auth-panel,
.contact-panel,
.contact-form,
.legal-document,
.control-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
}

.hero-metrics div {
    padding: 1rem;
}

.hero-metrics strong,
.stat-panel strong {
    display: block;
    color: var(--color-ink);
    font-size: 1.7rem;
    font-weight: 900;
}

.hero-metrics span,
.stat-panel span {
    display: block;
    color: var(--color-muted);
    font-size: 0.86rem;
    line-height: 1.45;
}

.hero-visual {
    position: relative;
    z-index: 1;
    margin: 0;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.hero-visual img {
    width: 100%;
    height: auto;
}

.section-band,
.split-section,
.product-workspace,
.contact-section {
    padding: 5rem 0;
}

.section-band {
    background: #fff;
}

.section-heading {
    max-width: 42rem;
    margin-bottom: 2.5rem;
}

.section-heading h2,
.section-title {
    margin-bottom: 1rem;
    font-size: clamp(2rem, 4vw, 3.6rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: 0;
}

.section-heading p {
    color: var(--color-muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

.feature-card {
    min-height: 100%;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(86, 56, 230, 0.35);
    box-shadow: 0 22px 54px rgba(28, 34, 48, 0.12);
}

.feature-card i {
    display: inline-grid;
    width: 2.75rem;
    height: 2.75rem;
    place-items: center;
    margin-bottom: 1.25rem;
    color: var(--color-violet);
    background: #f0edff;
    border-radius: var(--radius-sm);
    font-size: 1.35rem;
}

.feature-card h3 {
    margin-bottom: 0.65rem;
    font-size: 1.15rem;
    font-weight: 900;
}

.feature-card p {
    margin: 0;
    color: var(--color-muted);
    line-height: 1.65;
}

.compact-card {
    box-shadow: none;
}

.split-section {
    background:
        linear-gradient(135deg, rgba(37, 198, 218, 0.11), rgba(185, 242, 124, 0.14)),
        var(--color-soft);
}

.stat-panel {
    min-height: 10.5rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
}

.stat-panel strong {
    margin-bottom: 0.75rem;
    font-size: 2.6rem;
}

.page-hero {
    padding: calc(var(--nav-height) + 5rem) 0 4rem;
    background:
        radial-gradient(circle at 18% 20%, rgba(37, 198, 218, 0.18), transparent 22rem),
        linear-gradient(180deg, #fff 0%, #f8f9ff 100%);
}

.page-hero.compact .page-title {
    max-width: 15ch;
    font-size: clamp(2.45rem, 6vw, 5rem);
}

.product-workspace {
    background: var(--color-soft);
}

.control-panel {
    height: 100%;
    padding: 1.25rem;
    box-shadow: var(--shadow-card);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    font-weight: 900;
}

.status-pill {
    padding: 0.35rem 0.65rem;
    color: var(--color-violet);
    background: #f0edff;
    border-radius: 999px;
    font-size: 0.75rem;
}

.form-label {
    color: #303748;
    font-size: 0.86rem;
    font-weight: 800;
}

.form-control,
.form-select {
    min-height: 3rem;
    border-color: var(--color-line);
    border-radius: var(--radius-sm);
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(86, 56, 230, 0.55);
    box-shadow: 0 0 0 0.2rem rgba(86, 56, 230, 0.12);
}

.panel-note,
.form-status {
    min-height: 1.5rem;
    margin: 1rem 0 0;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: minmax(15rem, auto);
    gap: 1rem;
}

.ad-preview {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 18rem;
    padding: 1.25rem;
    overflow: hidden;
    color: #fff;
    background:
        linear-gradient(145deg, rgba(8, 10, 18, 0.08), rgba(8, 10, 18, 0.45)),
        radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.45), transparent 8rem),
        linear-gradient(135deg, #6d4aff, #25c6da);
    border-radius: var(--radius-md);
}

.ad-preview.wide {
    grid-row: span 2;
    min-height: 37rem;
    background:
        linear-gradient(180deg, rgba(8, 10, 18, 0.02), rgba(8, 10, 18, 0.55)),
        url("assets/hero-dashboard.png") center / cover;
}

.ad-preview.dark {
    background:
        radial-gradient(circle at top right, rgba(185, 242, 124, 0.42), transparent 12rem),
        linear-gradient(135deg, #090b13, #1e2433);
}

.ad-preview.is-loading {
    filter: saturate(0.75);
    transform: scale(0.99);
}

.channel {
    margin-bottom: 0.7rem;
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.ad-preview h2 {
    max-width: 12ch;
    margin-bottom: 0.65rem;
    font-size: 2rem;
    font-weight: 900;
    line-height: 1;
}

.ad-preview p {
    max-width: 20rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.84);
}

.auth-section,
.legal-section {
    padding: calc(var(--nav-height) + 4rem) 0 5rem;
}

.auth-panel,
.contact-panel,
.contact-form,
.legal-document {
    padding: clamp(1.25rem, 4vw, 2rem);
    box-shadow: var(--shadow-card);
}

.auth-panel h1 {
    margin-bottom: 0.85rem;
    font-size: clamp(2.25rem, 5vw, 3.6rem);
    font-weight: 900;
    line-height: 0.95;
}

.auth-intro {
    max-width: 28rem;
    margin: 0 0 1.75rem;
    color: var(--color-muted);
    font-size: 1rem;
    line-height: 1.6;
}

.auth-form {
    display: grid;
    gap: 1rem;
}

.auth-form .mb-3 {
    margin-bottom: 0 !important;
}

.auth-form .form-label {
    margin-bottom: 0.5rem;
    color: #252b3a;
    font-weight: 800;
}

.auth-form .form-control {
    min-height: 3rem;
    border-color: var(--color-line);
    border-radius: var(--radius-sm);
}

.auth-form .form-control:focus {
    border-color: var(--color-violet);
    box-shadow: 0 0 0 0.2rem rgba(86, 56, 230, 0.14);
}

.auth-form .input-group .form-control {
    border-right: 0;
}

.auth-form .password-toggle {
    min-width: 3rem;
    color: var(--color-muted);
    background: #fff;
    border: 1px solid var(--color-line);
    border-left: 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.auth-form .password-toggle:hover,
.auth-form .password-toggle:focus {
    color: var(--color-violet);
    background: var(--color-soft);
}

.auth-form .btn-primary {
    min-height: 3rem;
    margin-top: 0.25rem;
}

.contact-list,
.footer-links {
    padding: 0;
    margin: 0;
    list-style: none;
}

.contact-list {
    display: grid;
    gap: 1rem;
    margin-top: 1.25rem;
}

.contact-list li {
    display: flex;
    gap: 0.8rem;
    align-items: center;
    color: var(--color-muted);
}

.contact-list i {
    color: var(--color-violet);
    font-size: 1.2rem;
}

.legal-document {
    max-width: 850px;
    margin: 0 auto;
    background: #fff;
}

.legal-document h1 {
    margin-bottom: 0.5rem;
    font-size: clamp(2.2rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1;
}

.legal-document h2 {
    margin-top: 2rem;
    margin-bottom: 0.65rem;
    font-size: 1.2rem;
    font-weight: 900;
}

.legal-document p {
    color: var(--color-muted);
    line-height: 1.75;
}

.legal-document .updated {
    margin-bottom: 2rem;
    font-size: 0.92rem;
}

.site-footer {
    padding: 4rem 0 2rem;
    color: #fff;
    background: #080a12;
}

.footer-brand {
    color: #fff;
}

.footer-copy {
    max-width: 28rem;
    margin-top: 1rem;
    color: rgba(255, 255, 255, 0.66);
    line-height: 1.7;
}

.footer-title {
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.footer-links {
    display: grid;
    gap: 0.6rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.64);
    text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus {
    color: #fff;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    margin-top: 3rem;
    padding-top: 1.5rem;
    color: rgba(255, 255, 255, 0.52);
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    font-size: 0.9rem;
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
        animation-duration: 0.001ms !important;
    }
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        padding: 1rem 0;
    }

    .nav-action {
        width: 100%;
        margin-top: 0.5rem;
    }

    .hero-section {
        padding-top: calc(var(--nav-height) + 3rem);
    }

    .hero-title,
    .page-title {
        max-width: 100%;
    }

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

    .ad-preview.wide {
        grid-row: auto;
        min-height: 26rem;
    }
}

@media (max-width: 575.98px) {
    .hero-section,
    .page-hero,
    .auth-section,
    .legal-section {
        padding-top: calc(var(--nav-height) + 2rem);
    }

    .hero-actions .btn {
        width: 100%;
    }

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

    .section-band,
    .split-section,
    .product-workspace,
    .contact-section {
        padding: 3.5rem 0;
    }

    .hero-visual {
        border-radius: var(--radius-md);
    }

    .ad-preview {
        min-height: 16rem;
    }
}