/* Landing page — dark glassmorphism sports dashboard aesthetic */
:root {
    --kairos-orange: #ff6600;
    --kairos-orange-light: #ff8533;
    --kairos-orange-glow: rgba(255, 102, 0, 0.45);
    --kairos-gold: #ffb800;
    --kairos-green: #09b162;
    --kairos-ink: #f0f0f0;
    --kairos-ink-muted: rgba(240, 240, 240, 0.65);
    --kairos-dark: #0a0a0a;
    --kairos-panel: rgba(255, 255, 255, 0.06);
    --kairos-panel-border: rgba(255, 255, 255, 0.12);
    --kairos-glass-blur: 18px;
    --kairos-font-display: "Syne", sans-serif;
    --kairos-font-body: "Inter", system-ui, -apple-system, sans-serif;
    --landing-font-display: var(--kairos-font-display);
    --landing-font-body: var(--kairos-font-body);
    --kairos-text-xs: 0.625rem;
    --kairos-text-sm: 0.75rem;
    --kairos-text-base: 0.875rem;
    --kairos-text-lg: 0.9375rem;
    --kairos-leading-body: 1.5;
    --kairos-leading-compact: 1.35;
}

html {
    font-size: 16px;
}

.landing-body {
    margin: 0;
    color: var(--kairos-ink);
    font-family: var(--kairos-font-body);
    font-size: var(--kairos-text-base);
    line-height: var(--kairos-leading-body);
    background: var(--kairos-dark);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Top bar (fixed, glass background when scrolled) ── */
.landing-top {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 1.5rem;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.landing-top--scrolled {
    background: rgba(10, 10, 10, 0.88);
    backdrop-filter: blur(var(--kairos-glass-blur));
    -webkit-backdrop-filter: blur(var(--kairos-glass-blur));
    border-bottom-color: var(--kairos-panel-border);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}

.landing-top__inner {
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.landing-brand-link {
    font-family: var(--landing-font-display);
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    color: #fff;
    text-decoration: none;
    text-shadow: 0 0 20px var(--kairos-orange-glow);
}

.landing-nav-login {
    font-family: var(--landing-font-display);
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff;
    text-decoration: none;
    padding: 0.45rem 1.1rem;
    border: 1px solid var(--kairos-panel-border);
    border-radius: 2rem;
    background: var(--kairos-panel);
    backdrop-filter: blur(var(--kairos-glass-blur));
    -webkit-backdrop-filter: blur(var(--kairos-glass-blur));
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.landing-nav-login:hover {
    color: #fff;
    border-color: var(--kairos-orange);
    box-shadow: 0 0 20px var(--kairos-orange-glow);
}

/* ── Hero ── */
.landing-hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    color: #fff;
    background: var(--kairos-dark);
}

.landing-hero__visual {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.landing-hero__visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
    display: block;
}

/* Animated light trails */
.landing-hero__trails {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.landing-hero__trail {
    position: absolute;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: var(--kairos-orange);
    border-right-color: rgba(255, 102, 0, 0.3);
    opacity: 0.35;
}

.landing-hero__trail--1 {
    width: 600px;
    height: 280px;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: trail-spin 12s linear infinite;
}

.landing-hero__trail--2 {
    width: 780px;
    height: 360px;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-top-color: var(--kairos-gold);
    opacity: 0.2;
    animation: trail-spin 18s linear infinite reverse;
}

.landing-hero__trail--3 {
    width: 960px;
    height: 440px;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.12;
    animation: trail-spin 24s linear infinite;
}

@keyframes trail-spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

.landing-hero__shade {
    position: absolute;
    inset: 0;
    z-index: 2;
    background:
        linear-gradient(180deg, rgba(10, 10, 10, 0.3) 0%, rgba(10, 10, 10, 0.05) 40%, rgba(10, 10, 10, 0.85) 100%),
        radial-gradient(ellipse 80% 60% at 50% 40%, transparent 30%, rgba(10, 10, 10, 0.5) 100%);
}

.landing-hero__copy {
    position: relative;
    z-index: 3;
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    padding: 6.5rem 1.5rem 4.5rem;
}

.landing-brand {
    font-family: var(--landing-font-display);
    font-weight: 800;
    font-size: clamp(3.2rem, 10vw, 6.5rem);
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin: 0 0 1rem;
    color: #fff;
    text-shadow: 0 0 40px var(--kairos-orange-glow);
}

.landing-lede {
    font-family: var(--landing-font-display);
    font-weight: 700;
    font-size: clamp(1.45rem, 3.4vw, 2.35rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
    max-width: 28ch;
    margin: 0 0 1.75rem;
    color: rgba(255, 255, 255, 0.92);
}

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

.btn-landing-primary {
    font-family: var(--landing-font-display);
    font-weight: 700;
    background: var(--kairos-orange);
    border: 2px solid var(--kairos-orange);
    color: #fff;
    border-radius: 2rem;
    padding: 0.7rem 1.5rem;
    box-shadow: 0 0 24px var(--kairos-orange-glow);
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-landing-primary:hover,
.btn-landing-primary:focus {
    background: var(--kairos-orange-light);
    border-color: var(--kairos-orange-light);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 0 32px var(--kairos-orange-glow);
}

.btn-landing-ghost {
    font-family: var(--landing-font-display);
    font-weight: 700;
    background: var(--kairos-panel);
    border: 1px solid var(--kairos-panel-border);
    color: #fff;
    border-radius: 2rem;
    padding: 0.7rem 1.5rem;
    backdrop-filter: blur(var(--kairos-glass-blur));
    -webkit-backdrop-filter: blur(var(--kairos-glass-blur));
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-landing-ghost:hover,
.btn-landing-ghost:focus {
    border-color: rgba(255, 255, 255, 0.35);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.08);
}

/* ── Motion ── */
@keyframes landing-rise {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    animation: landing-rise 0.7s ease forwards;
}

.reveal-delay-1 { animation-delay: 0.12s; }
.reveal-delay-2 { animation-delay: 0.24s; }
.reveal-delay-3 { animation-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        animation: none;
    }

    .landing-hero__trail {
        animation: none;
    }

    .btn-landing-primary,
    .btn-landing-ghost {
        transition: none;
    }

    .btn-landing-primary:hover,
    .btn-landing-ghost:hover {
        transform: none;
    }
}

/* ── Content sections ── */
.landing-section {
    padding: 5rem 1.5rem;
    position: relative;
}

.landing-section__inner {
    max-width: 1120px;
    margin: 0 auto;
}

.landing-section__inner--narrow {
    max-width: 40rem;
}

.landing-section__inner--form {
    max-width: 28rem;
}

.landing-section__title {
    font-family: var(--landing-font-display);
    font-weight: 700;
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    letter-spacing: -0.03em;
    margin: 0 0 0.75rem;
    color: #fff;
}

.landing-section__lede {
    font-size: var(--kairos-text-lg);
    line-height: var(--kairos-leading-body);
    margin: 0 0 2.5rem;
    color: var(--kairos-ink-muted);
}

.landing-section--features {
    background:
        radial-gradient(ellipse 60% 50% at 50% 0%, rgba(255, 102, 0, 0.08), transparent 70%),
        var(--kairos-dark);
    border-block: 1px solid var(--kairos-panel-border);
}

.landing-feature-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .landing-feature-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

.landing-feature-list li {
    background: var(--kairos-panel);
    border: 1px solid var(--kairos-panel-border);
    border-radius: 1rem;
    padding: 1.75rem 1.5rem;
    backdrop-filter: blur(var(--kairos-glass-blur));
    -webkit-backdrop-filter: blur(var(--kairos-glass-blur));
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.landing-feature-list li:hover {
    border-color: rgba(255, 102, 0, 0.35);
    box-shadow: 0 0 30px rgba(255, 102, 0, 0.1);
}

.landing-feature-list h3 {
    font-family: var(--landing-font-display);
    font-weight: 700;
    font-size: 1.15rem;
    margin: 0 0 0.5rem;
    color: var(--kairos-orange);
}

.landing-feature-list p {
    margin: 0;
    font-size: var(--kairos-text-base);
    line-height: var(--kairos-leading-body);
    color: var(--kairos-ink-muted);
}

.landing-section--about {
    background:
        radial-gradient(ellipse 50% 40% at 80% 50%, rgba(255, 184, 0, 0.06), transparent 70%),
        var(--kairos-dark);
}

.landing-section--about .landing-section__inner {
    background: var(--kairos-panel);
    border: 1px solid var(--kairos-panel-border);
    border-radius: 1rem;
    padding: 2.5rem 2rem;
    backdrop-filter: blur(var(--kairos-glass-blur));
    -webkit-backdrop-filter: blur(var(--kairos-glass-blur));
}

.landing-section--interest {
    padding-bottom: 6rem;
    background:
        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(255, 102, 0, 0.06), transparent 70%),
        var(--kairos-dark);
}

.landing-alert {
    background: rgba(9, 177, 98, 0.12);
    border-left: 3px solid var(--kairos-green);
    padding: 0.85rem 1rem;
    margin-bottom: 1.25rem;
    border-radius: 0 0.5rem 0.5rem 0;
    color: var(--kairos-ink);
}

.landing-interest-form {
    background: var(--kairos-panel);
    border: 1px solid var(--kairos-panel-border);
    border-radius: 1rem;
    padding: 1.5rem 1.35rem 1.25rem;
    backdrop-filter: blur(var(--kairos-glass-blur));
    -webkit-backdrop-filter: blur(var(--kairos-glass-blur));
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.landing-interest-form label {
    font-family: var(--landing-font-display);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--kairos-ink);
}

.landing-interest-form .form-control {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.5rem;
    border-color: var(--kairos-panel-border);
    color: var(--kairos-ink);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.landing-interest-form .form-control::placeholder {
    color: rgba(240, 240, 240, 0.35);
}

.landing-interest-form .form-control:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--kairos-orange);
    box-shadow: 0 0 0 0.2rem rgba(255, 102, 0, 0.2);
    color: var(--kairos-ink);
}

.landing-interest-form .btn-landing-primary {
    width: 100%;
    margin-top: 0.25rem;
}

.landing-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--kairos-panel-border);
    background: rgba(0, 0, 0, 0.4);
}

.landing-footer__inner {
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
    justify-content: space-between;
    font-family: var(--landing-font-display);
    font-size: 0.9rem;
    color: var(--kairos-ink-muted);
}

.landing-footer__inner span:first-child {
    font-weight: 700;
    color: var(--kairos-orange);
}