:root {
    color-scheme: dark;

    --background: #070809;
    --background-soft: #0d0f12;
    --surface: rgba(18, 20, 24, 0.94);
    --surface-light: rgba(27, 29, 34, 0.92);
    --surface-hover: rgba(33, 35, 40, 0.96);

    --text: #f5f1e8;
    --text-soft: #c6c1b8;
    --text-muted: #918d85;

    --gold: #d3b77e;
    --gold-light: #ead7aa;
    --gold-dark: #96743f;
    --gold-transparent: rgba(211, 183, 126, 0.16);

    --telegram: #2aabee;
    --telegram-hover: #1997d2;

    --danger: #e88585;
    --success: #7ed6a5;

    --border: rgba(211, 183, 126, 0.22);
    --border-soft: rgba(255, 255, 255, 0.09);

    --shadow:
        0 22px 70px rgba(0, 0, 0, 0.42);

    --radius-small: 10px;
    --radius-medium: 18px;
    --radius-large: 28px;

    --container: 1240px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    margin: 0;
    background:
        radial-gradient(
            circle at 15% 8%,
            rgba(211, 183, 126, 0.08),
            transparent 28rem
        ),
        radial-gradient(
            circle at 90% 35%,
            rgba(255, 255, 255, 0.035),
            transparent 35rem
        ),
        linear-gradient(
            145deg,
            #050607 0%,
            #0b0d10 48%,
            #060708 100%
        );
    color: var(--text);
    font-family:
        Inter,
        ui-sans-serif,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body::before {
    position: fixed;
    z-index: -1;
    inset: 0;
    background-image:
        linear-gradient(
            118deg,
            transparent 0%,
            transparent 47%,
            rgba(255, 255, 255, 0.018) 48%,
            transparent 49%,
            transparent 100%
        ),
        linear-gradient(
            35deg,
            transparent 0%,
            transparent 66%,
            rgba(211, 183, 126, 0.018) 67%,
            transparent 68%
        );
    background-size:
        240px 240px,
        310px 310px;
    content: "";
    pointer-events: none;
}

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

a {
    color: inherit;
}

button,
input,
select {
    font: inherit;
}

button,
select {
    cursor: pointer;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible {
    outline: 3px solid var(--gold-light);
    outline-offset: 3px;
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    border: 0;
    margin: -1px;
    clip: rect(0 0 0 0);
    overflow: hidden;
    white-space: nowrap;
}

.skip-link {
    position: fixed;
    z-index: 999;
    top: 16px;
    left: 16px;
    padding: 12px 18px;
    border-radius: var(--radius-small);
    background: var(--gold-light);
    color: #111;
    font-weight: 700;
    text-decoration: none;
    transform: translateY(-160%);
}

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

/* Header */

.site-header {
    position: sticky;
    z-index: 100;
    top: 0;
    border-bottom: 1px solid var(--border-soft);
    background: rgba(7, 8, 9, 0.86);
    backdrop-filter: blur(18px);
}

.header-inner {
    display: flex;
    min-height: 88px;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}

.brand-logo {
    width: 70px;
    height: 70px;
    object-fit: cover;
}

.brand-copy {
    display: flex;
    flex-direction: column;
}

.brand-name {
    color: var(--gold-light);
    font-size: 1.06rem;
    font-weight: 700;
    letter-spacing: 0.19em;
    text-transform: uppercase;
}

.brand-tagline {
    color: var(--text-muted);
    font-size: 0.71rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.main-navigation {
    display: flex;
    align-items: center;
    gap: 30px;
}

.main-navigation a {
    color: var(--text-soft);
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-decoration: none;
    text-transform: uppercase;
    transition:
        color 160ms ease,
        transform 160ms ease;
}

.main-navigation a:hover {
    color: var(--gold-light);
    transform: translateY(-1px);
}

/* Hero */

.hero {
    position: relative;
    display: grid;
    min-height: 720px;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(
            90deg,
            rgba(7, 8, 9, 0.98) 0%,
            rgba(7, 8, 9, 0.89) 48%,
            rgba(7, 8, 9, 0.52) 100%
        ),
        url("onyx-logo.png")
        right 7% center / min(42vw, 540px)
        no-repeat;
    content: "";
    opacity: 0.68;
}

.hero-glow {
    position: absolute;
    top: 10%;
    right: 13%;
    width: 390px;
    height: 390px;
    border-radius: 50%;
    background: rgba(211, 183, 126, 0.09);
    filter: blur(90px);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-block: 120px;
}

.eyebrow {
    margin: 0 0 16px;
    color: var(--gold);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 780px;
    margin: 0;
    font-size: clamp(3rem, 7vw, 6.6rem);
    font-weight: 300;
    letter-spacing: -0.045em;
    line-height: 0.98;
}

.hero h1 span {
    display: block;
    margin-top: 10px;
    color: var(--gold-light);
    font-weight: 500;
}

.hero-description {
    max-width: 680px;
    margin: 34px 0 0;
    color: var(--text-soft);
    font-size: clamp(1rem, 2vw, 1.18rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 38px;
}

.button {
    display: inline-flex;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 12px 22px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.86rem;
    font-weight: 750;
    letter-spacing: 0.045em;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    transition:
        background-color 160ms ease,
        border-color 160ms ease,
        color 160ms ease,
        transform 160ms ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button-primary {
    border-color: var(--gold);
    background: linear-gradient(
        135deg,
        var(--gold-light),
        var(--gold)
    );
    color: #16130e;
}

.button-primary:hover {
    background: var(--gold-light);
}

.button-secondary {
    border-color: var(--border);
    background: transparent;
    color: var(--gold-light);
}

.button-secondary:hover {
    border-color: var(--gold);
    background: var(--gold-transparent);
}

.button-telegram {
    border-color: rgba(42, 171, 238, 0.42);
    background: rgba(42, 171, 238, 0.13);
    color: #9edcff;
}

.button-telegram:hover {
    border-color: var(--telegram);
    background: var(--telegram);
    color: #05131b;
}

.button-full {
    width: 100%;
}

.hero-statistics {
    display: flex;
    flex-wrap: wrap;
    gap: 1px;
    max-width: 700px;
    margin-top: 70px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-medium);
    overflow: hidden;
    background: var(--border-soft);
}

.statistic {
    display: flex;
    min-width: 180px;
    flex: 1;
    flex-direction: column;
    padding: 22px 26px;
    background: rgba(9, 10, 12, 0.88);
}

.statistic-value {
    color: var(--gold-light);
    font-size: 1.45rem;
    font-weight: 700;
}

.statistic-label {
    color: var(--text-muted);
    font-size: 0.74rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

/* Affiliate strip */

.affiliate-strip {
    border-block: 1px solid var(--border);
    background: rgba(211, 183, 126, 0.055);
}

.affiliate-strip .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding-block: 22px;
}

.affiliate-strip p {
    max-width: 940px;
    margin: 0;
    color: var(--text-soft);
    font-size: 0.9rem;
}

.affiliate-strip strong {
    color: var(--gold-light);
}

.affiliate-strip a {
    flex: none;
    color: var(--gold-light);
    font-size: 0.82rem;
    font-weight: 700;
    text-underline-offset: 4px;
}

/* Flight search */

.flight-search {
    padding-block: 110px;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 38px;
}

.section-heading h2,
.telegram-section h2,
.responsibility-section h2 {
    margin: 0;
    font-size: clamp(2.1rem, 5vw, 4rem);
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 1.05;
}

.section-heading p:not(.eyebrow) {
    max-width: 660px;
    margin: 18px 0 0;
    color: var(--text-soft);
}

.update-information {
    display: flex;
    flex: none;
    flex-direction: column;
    align-items: flex-end;
    color: var(--text-muted);
    font-size: 0.78rem;
    text-align: right;
}

.update-information strong {
    margin-top: 4px;
    color: var(--text-soft);
    font-size: 0.86rem;
}

.filter-panel {
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius-large);
    background:
        linear-gradient(
            145deg,
            rgba(21, 23, 27, 0.96),
            rgba(11, 12, 15, 0.96)
        );
    box-shadow: var(--shadow);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.form-field {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 8px;
}

.form-field-wide {
    grid-column: span 2;
}

.form-field label {
    color: var(--text-soft);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.075em;
    text-transform: uppercase;
}

.form-field input,
.form-field select {
    width: 100%;
    min-height: 49px;
    padding: 10px 13px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-small);
    outline: none;
    background: #111318;
    color: var(--text);
    transition:
        border-color 160ms ease,
        box-shadow 160ms ease;
}

.form-field input:hover,
.form-field select:hover {
    border-color: var(--border);
}

.form-field input:focus,
.form-field select:focus {
    border-color: var(--gold);
    box-shadow:
        0 0 0 3px rgba(211, 183, 126, 0.12);
}

.form-field input:disabled {
    cursor: not-allowed;
    opacity: 0.48;
}

.filter-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 26px;
}

.filter-note {
    margin: 16px 0 0;
    color: var(--text-muted);
    font-size: 0.78rem;
    text-align: right;
}

.results-toolbar {
    display: flex;
    min-height: 76px;
    align-items: center;
    justify-content: space-between;
}

.results-toolbar p {
    margin: 0;
    color: var(--text-soft);
    font-weight: 600;
}

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

.flight-card {
    position: relative;
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 24px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-medium);
    background:
        linear-gradient(
            150deg,
            rgba(24, 26, 31, 0.94),
            rgba(11, 12, 15, 0.97)
        );
    box-shadow:
        0 14px 44px rgba(0, 0, 0, 0.24);
    overflow: hidden;
    transition:
        border-color 180ms ease,
        transform 180ms ease,
        box-shadow 180ms ease;
}

.flight-card::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--gold),
        transparent
    );
    content: "";
    opacity: 0.65;
}

.flight-card:hover {
    border-color: var(--border);
    box-shadow:
        0 20px 54px rgba(0, 0, 0, 0.34);
    transform: translateY(-3px);
}

.flight-card-badge {
    align-self: flex-start;
    margin-bottom: 17px;
    padding: 5px 9px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--gold-light);
    font-size: 0.67rem;
    font-weight: 750;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.flight-route {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 12px;
}

.flight-location:last-child {
    text-align: right;
}

.flight-code {
    display: block;
    color: var(--gold-light);
    font-size: 1.42rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.flight-city {
    display: block;
    margin-top: 3px;
    color: var(--text-soft);
    font-size: 0.83rem;
}

.flight-country {
    display: block;
    color: var(--text-muted);
    font-size: 0.71rem;
}

.route-arrow {
    color: var(--gold-dark);
    font-size: 1.25rem;
}

.flight-primary-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 22px;
}

.detail-box {
    padding: 12px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-small);
    background: rgba(255, 255, 255, 0.025);
}

.detail-box span {
    display: block;
    color: var(--text-muted);
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.detail-box strong {
    display: block;
    margin-top: 4px;
    color: var(--text);
    font-size: 0.9rem;
}

.flight-price {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
    padding-top: 22px;
}

.flight-price-label {
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
}

.flight-price-value {
    display: block;
    margin-top: 1px;
    color: var(--gold-light);
    font-size: 1.45rem;
    font-weight: 700;
}

.flight-details {
    margin-top: 18px;
    border-top: 1px solid var(--border-soft);
}

.flight-details summary {
    padding-block: 15px;
    color: var(--text-soft);
    cursor: pointer;
    font-size: 0.81rem;
    font-weight: 700;
    list-style-position: inside;
}

.extended-details {
    display: grid;
    gap: 9px;
    padding-bottom: 17px;
}

.extended-detail {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    color: var(--text-muted);
    font-size: 0.79rem;
}

.extended-detail strong {
    color: var(--text-soft);
    font-weight: 600;
    text-align: right;
}

.flight-booking {
    margin-top: auto;
}

.flight-booking .button {
    width: 100%;
}

.flight-disclaimer {
    margin: 12px 0 0;
    color: var(--text-muted);
    font-size: 0.66rem;
    line-height: 1.45;
    text-align: center;
}

/* States */

.loading-state,
.error-state,
.empty-state {
    padding: 70px 24px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-medium);
    background: var(--surface);
    text-align: center;
}

.loading-spinner {
    display: inline-block;
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-soft);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 900ms linear infinite;
}

.loading-state p,
.error-state p,
.empty-state p {
    color: var(--text-soft);
}

.error-state h3,
.empty-state h3 {
    margin: 0;
    font-size: 1.45rem;
}

.error-state .button,
.empty-state .button {
    margin-top: 12px;
}

/* Telegram */

.telegram-section {
    padding-block: 110px;
    border-block: 1px solid var(--border-soft);
    background:
        radial-gradient(
            circle at 85% 50%,
            rgba(42, 171, 238, 0.08),
            transparent 28rem
        ),
        rgba(255, 255, 255, 0.015);
}

.telegram-layout {
    display: grid;
    grid-template-columns: 1.35fr 0.65fr;
    align-items: center;
    gap: 80px;
}

.telegram-layout > div > p:not(.eyebrow) {
    max-width: 720px;
    color: var(--text-soft);
}

.feature-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 28px;
    padding: 0;
    margin: 30px 0 0;
    list-style: none;
}

.feature-list li {
    position: relative;
    padding-left: 24px;
    color: var(--text-soft);
}

.feature-list li::before {
    position: absolute;
    left: 0;
    color: var(--gold);
    content: "◆";
    font-size: 0.65rem;
}

.telegram-card {
    padding: 34px;
    border: 1px solid rgba(42, 171, 238, 0.28);
    border-radius: var(--radius-large);
    background:
        linear-gradient(
            145deg,
            rgba(42, 171, 238, 0.11),
            rgba(13, 15, 18, 0.96)
        );
    box-shadow: var(--shadow);
}

.telegram-icon {
    display: grid;
    width: 54px;
    height: 54px;
    place-items: center;
    border-radius: 50%;
    background: var(--telegram);
    color: #07131b;
    font-size: 1.5rem;
}

.telegram-card h3 {
    margin: 22px 0 8px;
    font-size: 1.45rem;
}

.telegram-card p {
    margin: 0 0 24px;
    color: var(--text-soft);
}

/* Responsibility */

.responsibility-section {
    padding-block: 90px;
}

.responsibility-section .container {
    max-width: 900px;
}

.responsibility-section h2 {
    font-size: clamp(1.8rem, 4vw, 3rem);
}

.responsibility-section p {
    color: var(--text-soft);
}

/* Footer */

.site-footer {
    border-top: 1px solid var(--border);
    background: #050607;
}

.footer-layout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding-block: 46px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-brand img {
    width: 62px;
    height: 62px;
    object-fit: cover;
}

.footer-brand div {
    display: flex;
    flex-direction: column;
}

.footer-brand strong {
    color: var(--gold-light);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.footer-brand span {
    color: var(--text-muted);
    font-size: 0.72rem;
}

.footer-navigation {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 12px 22px;
}

.footer-navigation a {
    color: var(--text-soft);
    font-size: 0.78rem;
    text-decoration: none;
}

.footer-navigation a:hover {
    color: var(--gold-light);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    padding-block: 20px;
    border-top: 1px solid var(--border-soft);
    color: var(--text-muted);
    font-size: 0.7rem;
}

.footer-bottom p {
    margin: 0;
}

.noscript-notice {
    position: fixed;
    z-index: 999;
    right: 16px;
    bottom: 16px;
    left: 16px;
    padding: 16px;
    border: 1px solid var(--danger);
    border-radius: var(--radius-small);
    background: #211313;
    color: #fff;
    text-align: center;
}

/* Animations */

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive */

@media (max-width: 1050px) {
    .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .flight-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .telegram-layout {
        grid-template-columns: 1fr;
        gap: 44px;
    }
}

@media (max-width: 760px) {
    .container {
        width: min(
            calc(100% - 28px),
            var(--container)
        );
    }

    .header-inner {
        min-height: 76px;
    }

    .brand-logo {
        width: 58px;
        height: 58px;
    }

    .brand-tagline {
        display: none;
    }

    .main-navigation {
        display: none;
    }

    .hero {
        min-height: auto;
    }

    .hero::before {
        background:
            linear-gradient(
                rgba(7, 8, 9, 0.82),
                rgba(7, 8, 9, 0.98)
            ),
            url("onyx-logo.png")
            center 12% / 310px
            no-repeat;
        opacity: 0.55;
    }

    .hero-content {
        padding-block: 100px 80px;
    }

    .hero h1 {
        font-size: clamp(2.7rem, 14vw, 4.4rem);
    }

    .hero-actions {
        flex-direction: column;
    }

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

    .hero-statistics {
        flex-direction: column;
    }

    .statistic {
        min-width: 100%;
    }

    .affiliate-strip .container {
        align-items: flex-start;
        flex-direction: column;
    }

    .flight-search,
    .telegram-section {
        padding-block: 78px;
    }

    .section-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .update-information {
        align-items: flex-start;
        text-align: left;
    }

    .filter-panel {
        padding: 20px;
        border-radius: var(--radius-medium);
    }

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

    .form-field-wide {
        grid-column: span 1;
    }

    .filter-actions {
        flex-direction: column;
    }

    .filter-actions .button {
        width: 100%;
    }

    .filter-note {
        text-align: left;
    }

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

    .feature-list {
        grid-template-columns: 1fr;
    }

    .footer-layout,
    .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
    }

    .footer-navigation {
        justify-content: flex-start;
    }
}

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