/* Basic page layout */
:root {
    color-scheme: light;
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-strong: #f8fbff;
    --primary: #0d47a1;
    --primary-soft: #dbe9ff;
    --border: #d6dde6;
    --text: #1f2937;
    --muted: #556574;
    --success: #1b7a38;
    --danger: #b71c1c;
    --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: radial-gradient(circle at top left, rgba(13, 71, 161, 0.18), transparent 35%),
                linear-gradient(180deg, #f8fbff 0%, #f1f5f9 100%);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: inherit;
}

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

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

.page-header {
    background: #0d47a1;
    color: white;
    padding: 1.4rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.page-header h1 {
    margin: 0;
    font-size: clamp(1.4rem, 2vw, 1.85rem);
}

.page-header p {
    margin: 0.4rem 0 0;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
}

.page-header nav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.page-header nav a {
    text-decoration: none;
    color: white;
    background: rgba(255,255,255,0.12);
    padding: 0.8rem 1rem;
    border-radius: 999px;
    transition: background 200ms ease, transform 200ms ease;
}

.page-header nav a:hover,
.page-header nav a:focus-visible {
    background: rgba(255,255,255,0.22);
    transform: translateY(-1px);
}

.container {
    max-width: 1120px;
    margin: 1.5rem auto 2rem;
    padding: 0 1rem;
}

.card {
    background: var(--surface);
    border: 1px solid rgba(148, 163, 184, 0.15);
    border-radius: 1.15rem;
    box-shadow: var(--shadow);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
}

.card h2 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.1rem;
    align-items: flex-end;
}

.form-grid label,
.modal-content label,
.login-form label {
    display: block;
}

.form-grid label span,
.login-form label span {
    display: block;
    margin-bottom: 0.55rem;
    font-weight: 600;
    color: var(--muted);
}

.form-grid input,
.form-grid textarea,
.form-grid select,
.login-form input,
.modal-content input,
.modal-content textarea,
.modal-content select {
    width: 100%;
    padding: 0.95rem 1rem;
    border: 1px solid var(--border);
    border-radius: 0.95rem;
    background: #fafbff;
    color: var(--text);
    transition: border-color 180ms ease, box-shadow 180ms ease;
}

.form-grid input:focus,
.form-grid textarea:focus,
.form-grid select:focus,
.login-form input:focus,
.modal-content input:focus,
.modal-content textarea:focus,
.modal-content select:focus {
    outline: none;
    border-color: rgba(13, 71, 161, 0.6);
    box-shadow: 0 0 0 4px rgba(13, 71, 161, 0.08);
}

.full-width {
    grid-column: 1 / -1;
}

.inline-form {
    display: grid;
    grid-template-columns: minmax(100px, 1fr) auto;
    gap: 0.75rem;
    align-items: center;
}

.inline-form input {
    min-width: 120px;
}

button,
.login-form button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.95rem 1.2rem;
    border-radius: 0.9rem;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
    box-shadow: 0 8px 18px rgba(13, 71, 161, 0.16);
}

button:hover,
.login-form button:hover,
button:focus-visible,
.login-form button:focus-visible {
    transform: translateY(-1px);
    filter: brightness(1.05);
}

.actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.message {
    margin-bottom: 1rem;
    padding: 1rem 1.1rem;
    border-radius: 0.9rem;
    border: 1px solid transparent;
}

.message.success {
    background: #e8f5e9;
    color: var(--success);
    border-color: rgba(27, 122, 56, 0.2);
}

.message.error {
    background: #ffebee;
    color: var(--danger);
    border-color: rgba(183, 28, 28, 0.2);
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.96rem;
}

thead th {
    text-align: left;
    padding: 0.95rem 1rem;
    background: #edf4ff;
    color: #2b3a55;
    font-weight: 700;
    border-bottom: 1px solid rgba(13, 71, 161, 0.12);
}

tbody tr {
    border-top: 1px solid rgba(15, 23, 42, 0.05);
}

td {
    padding: 0.95rem 1rem;
    vertical-align: top;
    border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

table tbody tr:nth-child(even) {
    background: #fafbff;
}

.edit-button {
    background: #1976d2;
    color: white;
    border: none;
    padding: 0.72rem 0.9rem;
    border-radius: 0.85rem;
    cursor: pointer;
    white-space: nowrap;
}

.edit-button:hover,
.edit-button:focus-visible {
    filter: brightness(1.05);
}

.passenger-group {
    display: grid;
    gap: 0.75rem;
}

.passenger-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.passenger-tag {
    background: #e3f2fd;
    color: #0d47a1;
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.92rem;
}

.tag-remove {
    border: none;
    background: transparent;
    color: #0d47a1;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
}

.login-page,
.modal {
    min-height: 100vh;
}

.login-page {
    display: grid;
    place-items: center;
    padding: 2rem;
}

.login-card {
    width: 100%;
    max-width: 420px;
}

.modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.45);
    padding: 1rem;
}

.modal[aria-hidden="false"] {
    display: flex;
}

.modal-content {
    background: var(--surface);
    width: 100%;
    max-width: 640px;
    border-radius: 1.15rem;
    padding: 1.5rem;
    position: relative;
}

@media (max-width: 900px) {
    .container {
        margin-top: 1rem;
    }

    .page-header {
        justify-content: center;
        text-align: center;
    }

    .page-header nav {
        justify-content: center;
    }

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

@media (max-width: 680px) {
    .card {
        padding: 1.25rem;
    }

    .form-grid,
    .inline-form {
        grid-template-columns: 1fr;
    }

    .inline-form button {
        width: 100%;
    }

    .page-header {
        padding: 1rem;
    }

    table {
        font-size: 0.92rem;
    }

    thead {
        position: sticky;
        top: 0;
        background: #f8fbff;
    }

    .page-header p {
        font-size: 0.92rem;
    }
}