:root {
    color-scheme: dark;
    --color-page: #070b10;
    --color-surface: #101722;
    --color-surface-raised: #151f2d;
    --color-surface-soft: #0c121a;
    --color-border: #263344;
    --color-border-strong: #34465c;
    --color-text: #f3f7fb;
    --color-muted: #95a7ba;
    --color-subtle: #6f8295;
    --color-accent: #37d6b6;
    --color-accent-strong: #7cf3db;
    --color-warning: #ffd166;
    --color-danger: #ff8585;
    --color-info: #7db7ff;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-panel: 0 24px 80px rgba(0, 0, 0, 0.34);
    --shadow-card: 0 16px 38px rgba(0, 0, 0, 0.22);
    --space-1: 6px;
    --space-2: 10px;
    --space-3: 14px;
    --space-4: 18px;
    --space-5: 24px;
    --space-6: 32px;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--color-page);
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        linear-gradient(90deg, rgba(55, 214, 182, 0.04) 1px, transparent 1px),
        linear-gradient(180deg, rgba(125, 183, 255, 0.04) 1px, transparent 1px),
        radial-gradient(circle at 12% 0%, rgba(55, 214, 182, 0.16), transparent 34rem),
        radial-gradient(circle at 94% 12%, rgba(125, 183, 255, 0.14), transparent 32rem),
        var(--color-page);
    background-size: 48px 48px, 48px 48px, auto, auto, auto;
    color: var(--color-text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    -webkit-tap-highlight-color: transparent;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.app-shell {
    width: min(1240px, 100%);
    margin: 0 auto;
    padding: var(--space-5) var(--space-3) var(--space-6);
}

.app-shell--with-sidebar {
    width: min(1440px, 100%);
    display: grid;
    gap: var(--space-4);
}

.app-sidebar {
    border: 1px solid rgba(52, 70, 92, 0.78);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(21, 31, 45, 0.98), rgba(7, 11, 16, 0.96));
    box-shadow: var(--shadow-panel);
    padding: var(--space-3);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-3);
    margin-bottom: var(--space-3);
}

.sidebar-brand strong,
.sidebar-brand span {
    display: block;
}

.sidebar-brand strong {
    color: var(--color-text);
}

.sidebar-brand span {
    color: var(--color-muted);
    font-size: 0.82rem;
    font-weight: 700;
}

.sidebar-nav {
    display: grid;
    gap: var(--space-1);
}

.sidebar-link {
    display: flex;
    min-height: 42px;
    align-items: center;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--color-muted);
    padding: 0 var(--space-3);
    text-decoration: none;
    font-weight: 850;
}

.sidebar-link:hover,
.sidebar-link--active {
    border-color: rgba(55, 214, 182, 0.24);
    background: rgba(55, 214, 182, 0.1);
    color: var(--color-accent-strong);
}

.sidebar-logout {
    margin-top: var(--space-4);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border);
}

.app-main {
    min-width: 0;
}

.flash-stack {
    display: grid;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    align-items: center;
    width: min(720px, 100%);
    margin: 0 auto;
    padding: var(--space-5) var(--space-3);
}

.auth-card h1 {
    margin-bottom: var(--space-5);
    font-size: clamp(2.7rem, 14vw, 5.4rem);
}

.auth-form {
    display: grid;
    gap: var(--space-3);
}

.auth-form label {
    display: grid;
    gap: var(--space-2);
    color: var(--color-muted);
    font-weight: 800;
}

.dashboard-header {
    display: grid;
    gap: var(--space-4);
    align-items: end;
    padding: var(--space-2) 0 var(--space-5);
}

.eyebrow,
.airport-label {
    display: block;
    margin: 0 0 var(--space-1);
    color: var(--color-accent-strong);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

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

h1 {
    margin-bottom: 0;
    color: var(--color-text);
    font-size: clamp(2.25rem, 10vw, 5rem);
    line-height: 0.92;
}

h2 {
    margin-bottom: 0;
    font-size: 1.15rem;
    line-height: 1.15;
}

h3 {
    margin-bottom: 0;
    font-size: clamp(2.2rem, 14vw, 5.4rem);
    line-height: 0.88;
}

.header-status {
    display: inline-flex;
    width: max-content;
    align-items: center;
    gap: var(--space-2);
    border: 1px solid rgba(55, 214, 182, 0.24);
    border-radius: 999px;
    background: rgba(16, 23, 34, 0.76);
    color: var(--color-muted);
    padding: 9px 12px;
    font-size: 0.9rem;
    font-weight: 700;
}

.live-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 0 5px rgba(55, 214, 182, 0.12);
}

.dashboard-grid,
.sidebar-column {
    display: grid;
    gap: var(--space-4);
}

.page-grid {
    display: grid;
    gap: var(--space-4);
}

.dashboard-panel {
    border: 1px solid rgba(52, 70, 92, 0.78);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(21, 31, 45, 0.95), rgba(12, 18, 26, 0.95));
    box-shadow: var(--shadow-panel);
    padding: var(--space-4);
}

.panel-heading,
.panel-heading-row {
    margin-bottom: var(--space-4);
}

.panel-heading-row {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: var(--space-3);
}

.search-panel {
    position: relative;
    overflow: hidden;
}

.search-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(55, 214, 182, 0.12), transparent 42%);
}

.search-panel > * {
    position: relative;
}

.flight-search-form label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--color-muted);
    font-size: 0.92rem;
    font-weight: 800;
}

.filter-form,
.encoder-form,
.confirm-form,
.inline-form {
    display: grid;
    gap: var(--space-3);
}

.filter-form label,
.encoder-form label,
.confirm-form label {
    display: grid;
    gap: var(--space-2);
    color: var(--color-muted);
    font-weight: 800;
}

.filter-form--wide {
    align-items: end;
}

.checkbox-row {
    display: flex !important;
    min-height: 52px;
    align-items: center;
    gap: var(--space-2);
}

.checkbox-row input {
    width: 18px;
    height: 18px;
}

.input-row {
    display: grid;
    gap: var(--space-2);
}

.flight-input {
    width: 100%;
    min-height: 52px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(7, 11, 16, 0.76);
    color: var(--color-text);
    padding: 0 15px;
    outline: none;
    text-transform: uppercase;
}

.text-area {
    min-height: 140px;
    padding-top: 14px;
    resize: vertical;
    text-transform: none;
}

select.flight-input {
    appearance: none;
}

.flight-input::placeholder {
    color: var(--color-subtle);
}

.flight-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(55, 214, 182, 0.14);
}

.primary-button,
.secondary-button {
    position: relative;
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 900;
}

.primary-button {
    border: 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-info));
    color: #04100f;
    padding: 0 18px;
}

.secondary-button {
    width: 100%;
    border: 1px solid var(--color-border);
    background: rgba(7, 11, 16, 0.54);
    color: var(--color-text);
    padding: 0 14px;
}

.secondary-button:hover {
    border-color: var(--color-border-strong);
}

.secondary-button--compact {
    width: auto;
    min-height: 42px;
    padding: 0 12px;
}

.danger-button {
    border-color: rgba(255, 133, 133, 0.44);
    color: #ffd8d8;
}

.button-loader,
.loading-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
}

.is-loading .button-loader,
.loading-indicator:not([hidden]) .loading-spinner {
    display: inline-block;
}

.is-loading .button-label {
    opacity: 0.78;
}

.loading-indicator {
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-3);
    color: var(--color-muted);
    font-weight: 700;
}

.loading-indicator:not([hidden]) {
    display: flex;
}

.message-card {
    margin-top: var(--space-3);
    border-radius: var(--radius-md);
    padding: 12px 14px;
}

.message-card--error {
    border: 1px solid rgba(255, 133, 133, 0.44);
    background: rgba(255, 133, 133, 0.1);
    color: #ffd8d8;
}

.message-card--success {
    border: 1px solid rgba(55, 214, 182, 0.4);
    background: rgba(55, 214, 182, 0.1);
    color: #c8fff2;
}

.message-card--warning,
.message-card--info {
    border: 1px solid rgba(255, 209, 102, 0.38);
    background: rgba(255, 209, 102, 0.1);
    color: #ffe7a7;
}

.message-list {
    display: grid;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.saved-flights,
.recent-searches {
    align-self: start;
}

.saved-flights-list,
.recent-searches-list,
.result-animation-container {
    display: grid;
    gap: var(--space-2);
}

.saved-flights-list,
.recent-searches-list {
    max-height: 420px;
    overflow: auto;
    padding-right: 2px;
}

.count-badge,
.mini-status,
.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 900;
    white-space: nowrap;
}

.count-badge {
    min-width: 34px;
    height: 34px;
    background: rgba(55, 214, 182, 0.13);
    color: var(--color-accent-strong);
}

.mini-status {
    border: 1px solid rgba(125, 183, 255, 0.24);
    background: rgba(125, 183, 255, 0.1);
    color: #b9d7ff;
    padding: 5px 8px;
}

.flight-card,
.empty-state {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(16, 23, 34, 0.74);
}

.saved-flight-card,
.recent-search-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    min-height: 64px;
    padding: 12px;
    box-shadow: none;
}

.saved-flight-number,
.saved-flight-date,
.recent-search-number,
.recent-search-date,
.recent-search-time {
    display: block;
}

.saved-flight-number,
.recent-search-number {
    color: var(--color-text);
    font-size: 1.02rem;
    font-weight: 950;
}

.saved-flight-date,
.recent-search-date,
.recent-search-time {
    color: var(--color-muted);
    font-size: 0.86rem;
}

.recent-search-time {
    border: 1px solid rgba(125, 183, 255, 0.2);
    border-radius: 999px;
    background: rgba(125, 183, 255, 0.08);
    padding: 5px 8px;
    font-weight: 800;
    white-space: nowrap;
}

.empty-state,
.empty-result {
    min-height: 180px;
    display: grid;
    align-content: center;
    color: var(--color-muted);
    padding: var(--space-5);
}

.empty-state--compact {
    min-height: 96px;
}

.page-hero h2 {
    margin-bottom: var(--space-4);
    font-size: clamp(2rem, 5vw, 4rem);
}

.summary-grid,
.quick-stats-grid {
    display: grid;
    gap: var(--space-3);
}

.summary-card,
.stat-card {
    display: grid;
    gap: var(--space-1);
    padding: var(--space-4);
}

.summary-card span,
.stat-card span {
    color: var(--color-muted);
    font-size: 0.82rem;
    font-weight: 850;
}

.summary-card strong,
.stat-card strong {
    color: var(--color-text);
    font-size: clamp(1.4rem, 5vw, 2.4rem);
    line-height: 1;
}

.summary-card small,
.stat-card small {
    color: var(--color-muted);
    font-weight: 700;
}

.table-list,
.settings-list {
    display: grid;
    gap: var(--space-2);
}

.data-row {
    display: grid;
    gap: var(--space-1);
    padding: var(--space-3);
}

.managed-record {
    gap: var(--space-3);
}

.record-main {
    display: grid;
    gap: var(--space-1);
}

.record-actions {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-2);
}

.record-actions summary {
    cursor: pointer;
    color: var(--color-accent-strong);
    font-weight: 900;
}

.inline-form {
    margin-top: var(--space-2);
}

.confirm-form {
    margin-top: var(--space-4);
}

.result-inline-card,
.roster-preview {
    margin-top: var(--space-3);
}

.status-details {
    margin-bottom: var(--space-3);
    color: var(--color-muted);
}

.status-details summary {
    cursor: pointer;
    color: var(--color-accent-strong);
    font-weight: 900;
}

.status-details p {
    margin: var(--space-2) 0 0;
}

.data-row strong {
    color: var(--color-text);
    font-size: 1.05rem;
}

.data-row span,
.data-row small {
    color: var(--color-muted);
    font-weight: 750;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2);
}

.calendar-day {
    min-height: 92px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(7, 11, 16, 0.42);
    padding: var(--space-3);
}

.calendar-day span,
.calendar-day strong,
.calendar-day small {
    display: block;
}

.calendar-day span {
    color: var(--color-accent-strong);
    font-weight: 950;
}

.calendar-day strong {
    margin-top: var(--space-2);
    color: var(--color-text);
}

.calendar-day small {
    margin-top: var(--space-2);
    color: var(--color-muted);
    font-weight: 750;
}

.calendar-day--today {
    border-color: rgba(55, 214, 182, 0.58);
    background: rgba(55, 214, 182, 0.1);
}

.empty-result h3 {
    margin-bottom: var(--space-2);
    color: var(--color-text);
    font-size: clamp(2rem, 12vw, 4.2rem);
}

.empty-result p {
    margin-bottom: 0;
}

.results-container {
    min-width: 0;
}

.flight-result-card {
    padding: var(--space-4);
    box-shadow: var(--shadow-card);
}

.flight-card-header {
    display: grid;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.airline-name,
.api-status {
    color: var(--color-muted);
}

.airline-name {
    margin: var(--space-2) 0 0;
    font-weight: 800;
}

.status-stack {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
}

.flight-status,
.status-badge {
    border: 1px solid rgba(55, 214, 182, 0.34);
    background: rgba(55, 214, 182, 0.13);
    color: var(--color-accent-strong);
    padding: 7px 10px;
}

.status-badge--delayed,
.status-badge--scheduled {
    border-color: rgba(255, 209, 102, 0.38);
    background: rgba(255, 209, 102, 0.12);
    color: var(--color-warning);
}

.status-badge--cancelled,
.status-badge--n/a {
    border-color: rgba(255, 133, 133, 0.42);
    background: rgba(255, 133, 133, 0.12);
    color: var(--color-danger);
}

.status-badge--in-flight,
.status-badge--arrived {
    border-color: rgba(55, 214, 182, 0.34);
    background: rgba(55, 214, 182, 0.13);
    color: var(--color-accent-strong);
}

.api-status {
    font-size: 0.82rem;
    font-weight: 800;
}

.route-board {
    display: grid;
    gap: var(--space-3);
    align-items: center;
    border: 1px solid rgba(52, 70, 92, 0.8);
    border-radius: var(--radius-lg);
    background: rgba(7, 11, 16, 0.46);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.airport-block {
    min-width: 0;
}

.airport-block strong,
.airport-block span {
    display: block;
}

.airport-block strong {
    margin-bottom: var(--space-1);
    color: var(--color-text);
    font-size: 1.05rem;
    overflow-wrap: anywhere;
}

.airport-block span:not(.airport-label) {
    color: var(--color-muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.route-path {
    position: relative;
    height: 26px;
}

.route-path::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 4px;
    right: 4px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.route-path span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 18px rgba(55, 214, 182, 0.9);
    transform: translate(-50%, -50%);
}

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2);
    margin: 0;
}

.metric-card {
    min-width: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(7, 11, 16, 0.42);
    padding: var(--space-3);
}

.metric-card dt {
    margin-bottom: var(--space-1);
    color: var(--color-muted);
    font-size: 0.8rem;
    font-weight: 800;
}

.metric-card dd {
    margin: 0;
    color: var(--color-text);
    font-size: 1rem;
    font-weight: 950;
    overflow-wrap: anywhere;
}

@media (min-width: 640px) {
    .app-shell {
        padding: var(--space-6) var(--space-5) 44px;
    }

    .dashboard-header {
        grid-template-columns: 1fr auto;
    }

    .app-shell--with-sidebar {
        grid-template-columns: 240px minmax(0, 1fr);
        align-items: start;
    }

    .app-sidebar {
        position: sticky;
        top: var(--space-5);
    }

    .input-row {
        grid-template-columns: 1fr auto;
    }

    .filter-form,
    .encoder-form {
        grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
        align-items: end;
    }

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

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

    .calendar-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .metric-card--wide {
        grid-column: 1 / -1;
    }
}

@media (min-width: 920px) {
    .dashboard-grid {
        grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
        align-items: start;
    }

    .sidebar-column {
        position: sticky;
        top: var(--space-5);
    }

    .flight-card-header {
        grid-template-columns: 1fr auto;
        align-items: start;
    }

    .status-stack {
        justify-content: flex-end;
    }

    .route-board {
        grid-template-columns: minmax(0, 1fr) 110px minmax(0, 1fr);
    }

    .airport-block--arrival {
        text-align: right;
    }
}

@media (min-width: 1120px) {
    .metrics-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .quick-stats-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .calendar-grid {
        grid-template-columns: repeat(7, minmax(0, 1fr));
    }
}