:root {
    --brand-bg: #06111f;
    --brand-surface: #0b1b2d;
    --brand-surface-strong: #10243a;
    --brand-surface-soft: #142a42;
    --brand-text: #f7fbff;
    --brand-muted: #a9bacb;
    --brand-line: rgba(164, 194, 222, 0.2);
    --brand-blue: #2482ff;
    --brand-blue-hover: #4b99ff;
    --brand-green: #21b980;
    --brand-green-hover: #35ce94;
    --brand-yellow: #f2c94c;
    --brand-red: #e24c62;
    --brand-violet: #9256e8;
    --brand-radius-sm: 10px;
    --brand-radius: 16px;
    --brand-radius-lg: 24px;
    --brand-shadow: 0 18px 48px rgba(0, 0, 0, 0.26);
    --brand-shadow-hover: 0 24px 56px rgba(0, 0, 0, 0.34);
    --brand-transition: 180ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--brand-bg);
    color: var(--brand-text);
    font-family: "Segoe UI", Inter, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -10;
    pointer-events: none;
    background:
        radial-gradient(circle at 8% 18%, rgba(36, 130, 255, 0.08), transparent 32%),
        radial-gradient(circle at 90% 74%, rgba(33, 185, 128, 0.06), transparent 30%);
}

::selection {
    background: rgba(36, 130, 255, 0.4);
    color: #fff;
}

:focus-visible {
    outline: 3px solid rgba(75, 153, 255, 0.72);
    outline-offset: 3px;
}

header {
    min-height: 92px;
    padding: 14px clamp(20px, 3.5vw, 56px);
    background: #c8102e !important;
    border-bottom: 1px solid #ff8598 !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(18px) saturate(130%);
}

.logo img {
    height: 56px;
}

nav {
    gap: 4px;
}

nav a {
    position: relative;
    margin: 0 3px;
    padding: 10px 12px;
    border-radius: 9px;
    color: rgba(247, 251, 255, 0.86);
    font-size: 14px;
    font-weight: 600;
    transition: color var(--brand-transition), background var(--brand-transition);
}

nav a::after {
    content: "";
    position: absolute;
    right: 12px;
    bottom: 4px;
    left: 12px;
    height: 2px;
    border-radius: 999px;
    background: var(--brand-blue);
    transform: scaleX(0);
    transition: transform var(--brand-transition);
}

nav a:hover,
nav a:focus-visible {
    color: #fff;
    background: rgba(36, 130, 255, 0.1);
}

nav a:hover::after,
nav a:focus-visible::after {
    transform: scaleX(1);
}

.login-link {
    min-height: 44px;
    padding: 9px 13px;
    border: 1px solid var(--brand-line);
    border-radius: var(--brand-radius-sm);
    color: rgba(247, 251, 255, 0.86);
    font-size: 14px;
    font-weight: 650;
    transition: border-color var(--brand-transition), background var(--brand-transition), color var(--brand-transition);
}

.login-link:hover {
    color: #fff;
    border-color: rgba(75, 153, 255, 0.58);
    background: rgba(36, 130, 255, 0.12);
}

.login-icon {
    width: 24px;
    height: 24px;
}

.btn,
button:not(.insight-card):not(.mobile-menu-toggle):not(.upload-popup-close):not(.insight-modal-close),
input[type="button"],
input[type="submit"] {
    min-height: 46px;
    padding: 11px 19px;
    border: 1px solid transparent;
    border-radius: var(--brand-radius-sm);
    font: inherit;
    font-weight: 750;
    letter-spacing: 0.01em;
    box-shadow: 0 8px 20px rgba(15, 111, 255, 0.16);
    transition: transform var(--brand-transition), box-shadow var(--brand-transition), background var(--brand-transition), border-color var(--brand-transition);
}

.btn,
button:not(.insight-card):not(.mobile-menu-toggle):not(.upload-popup-close):not(.insight-modal-close) {
    background: var(--brand-blue);
    color: #fff;
}

.btn:hover,
button:not(.insight-card):not(.mobile-menu-toggle):not(.upload-popup-close):not(.insight-modal-close):not(:disabled):hover,
input[type="button"]:hover,
input[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 13px 26px rgba(15, 111, 255, 0.24);
}

.btn:hover,
button:not(.insight-card):not(.mobile-menu-toggle):not(.upload-popup-close):not(.insight-modal-close):not(.danger):hover {
    background: var(--brand-blue-hover);
}

.btn.ghost,
.ghost,
.secondary,
.back,
.preview {
    color: var(--brand-text);
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--brand-line);
    box-shadow: none;
}

.btn.ghost:hover,
.ghost:hover,
.secondary:hover,
.back:hover,
.preview:hover {
    color: #fff;
    background: rgba(36, 130, 255, 0.11);
    border-color: rgba(75, 153, 255, 0.55);
}

.danger,
button.danger {
    background: var(--brand-red);
    box-shadow: 0 8px 20px rgba(226, 76, 98, 0.15);
}

.ai,
.ai-rating,
button.ai,
button.ai-rating {
    background: var(--brand-violet);
    box-shadow: 0 8px 20px rgba(146, 86, 232, 0.17);
}

.hero::before {
    background:
        linear-gradient(90deg, rgba(3, 10, 20, 0.64) 0%, rgba(3, 10, 20, 0.24) 55%, rgba(3, 10, 20, 0.48) 100%),
        linear-gradient(0deg, rgba(6, 17, 31, 0.42), transparent 52%),
        url("website/images/hero.jpg");
    background-position: center;
    background-size: cover;
}

.hero h1,
.legal-card h1 {
    max-width: 18ch;
    letter-spacing: -0.035em;
    text-wrap: balance;
}

.hero p,
.legal-card p {
    color: rgba(231, 239, 247, 0.84);
}

.cta {
    min-height: 280px;
    gap: clamp(36px, 6vw, 90px);
    padding: 58px clamp(24px, 8vw, 140px);
    background:
        linear-gradient(180deg, rgba(16, 36, 58, 0.36), rgba(6, 17, 31, 0.1)),
        var(--brand-bg);
    border-top: 1px solid var(--brand-line);
}

.cta-left h2 {
    font-size: clamp(25px, 2.2vw, 34px);
    letter-spacing: -0.025em;
}

.cta-left p,
.cta-center a,
.cta-contact a {
    color: var(--brand-muted);
}

.cta-center a,
.cta-contact a {
    padding: 3px 0;
    transition: color var(--brand-transition), transform var(--brand-transition);
}

.cta-center a:hover,
.cta-contact a:hover {
    color: var(--brand-blue-hover);
    transform: translateX(2px);
}

.mobile-menu-toggle {
    border-color: var(--brand-line);
    border-radius: var(--brand-radius-sm);
    background: var(--brand-surface);
    box-shadow: none;
}

@media (max-width: 900px) {
    header {
        min-height: 82px;
        padding: 12px 18px;
    }

    .logo img {
        height: 48px;
    }

    header nav.mobile-open {
        top: calc(100% + 7px);
        padding: 9px;
        border-color: var(--brand-line);
        border-radius: var(--brand-radius);
        background: rgba(6, 17, 31, 0.98);
        box-shadow: var(--brand-shadow);
    }

    header nav.mobile-open a {
        padding: 13px 12px;
        border-bottom-color: rgba(164, 194, 222, 0.12);
    }

    .login-link span {
        display: none;
    }

    .cta {
        padding: 46px 7%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}