:root {
    --color-bg: #f5f7fa;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #1a202c;
    --color-muted: #64748b;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-success: #16a34a;
    --color-warning: #d97706;
    --color-danger: #dc2626;
    --color-accent: #f0fdf4;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.12);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 16px;
    line-height: 1.5;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 16px;
}

.container-narrow {
    max-width: 480px;
    margin: 0 auto;
    padding: 16px;
}

header.app-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.app-header h1 {
    font-size: 18px;
    margin: 0;
    font-weight: 600;
}

nav.app-nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

nav.app-nav a {
    color: var(--color-text);
    font-size: 14px;
    padding: 6px 10px;
    border-radius: var(--radius);
}

nav.app-nav a:hover {
    background: var(--color-bg);
    text-decoration: none;
}

nav.app-nav a.active {
    background: var(--color-primary);
    color: #fff;
}

.card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.card h2 {
    margin-top: 0;
    font-size: 18px;
}

.card h3 {
    font-size: 16px;
    color: var(--color-muted);
    margin-top: 0;
}

.form-group {
    margin-bottom: 14px;
}

label {
    display: block;
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: 4px;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="tel"],
input[type="time"],
input[type="number"],
input[type="email"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    font-size: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.15s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.code-input {
    font-size: 28px;
    letter-spacing: 8px;
    text-align: center;
    font-family: monospace;
    padding: 14px;
}

button, .btn {
    display: inline-block;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    background: var(--color-primary);
    color: #fff;
    text-decoration: none;
    transition: background 0.15s;
}

button:hover, .btn:hover {
    background: var(--color-primary-hover);
    text-decoration: none;
}

button.btn-secondary, .btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

button.btn-secondary:hover, .btn-secondary:hover {
    background: var(--color-bg);
}

button.btn-danger, .btn-danger {
    background: var(--color-danger);
}

button.btn-danger:hover, .btn-danger:hover {
    background: #b91c1c;
}

button.btn-success, .btn-success {
    background: var(--color-success);
}

button.btn-success:hover, .btn-success:hover {
    background: #15803d;
}

button.btn-small, .btn-small {
    padding: 6px 10px;
    font-size: 13px;
}

button.btn-block, .btn-block {
    display: block;
    width: 100%;
}

.btn-large {
    padding: 14px 20px;
    font-size: 17px;
}

.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 14px;
    font-size: 14px;
    border-left: 4px solid;
}

.flash-success {
    background: #f0fdf4;
    border-color: var(--color-success);
    color: #166534;
}

.flash-error {
    background: #fef2f2;
    border-color: var(--color-danger);
    color: #991b1b;
}

.flash-warn {
    background: #fffbeb;
    border-color: var(--color-warning);
    color: #92400e;
}

.flash-info {
    background: #eff6ff;
    border-color: var(--color-primary);
    color: #1e3a8a;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 8px 0;
    font-size: 14px;
}

table th, table td {
    padding: 10px 8px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

table th {
    font-weight: 600;
    color: var(--color-muted);
    background: var(--color-bg);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

table tr:last-child td {
    border-bottom: none;
}

.code-badge {
    display: inline-block;
    padding: 4px 8px;
    background: var(--color-bg);
    border-radius: 4px;
    font-family: monospace;
    font-size: 14px;
    letter-spacing: 2px;
    font-weight: 600;
}

.code-cell {
    display: inline-flex;
    gap: 4px;
    align-items: center;
}

.btn-icon {
    background: transparent;
    border: 1px solid transparent;
    color: var(--color-muted);
    cursor: pointer;
    padding: 3px 6px;
    font-size: 14px;
    line-height: 1;
    border-radius: 4px;
    min-width: auto;
}

.btn-icon:hover {
    background: var(--color-bg);
    border-color: var(--color-border);
}

.code-badge.highlight {
    background: #fef3c7;
    color: #92400e;
    animation: pulse 1s;
}

.admin-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-primary);
    color: #fff;
    font-size: 11px;
    border-radius: 999px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.muted {
    color: var(--color-muted);
    font-size: 13px;
}

.stat {
    display: inline-block;
    margin-right: 18px;
    font-size: 14px;
}

.stat strong {
    font-size: 24px;
    display: block;
    color: var(--color-primary);
}

.message-box {
    background: var(--color-bg);
    padding: 12px;
    border-radius: var(--radius);
    border: 1px dashed var(--color-border);
    font-family: monospace;
    font-size: 14px;
    word-break: break-all;
    margin: 8px 0;
    white-space: pre-wrap;
}

.flex-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

form.inline {
    display: inline;
}

.actions-cell {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.action-buttons button {
    margin-top: 12px;
}

.action-buttons button:first-of-type {
    margin-top: 0;
}

.action-hint {
    margin: 4px 0 0 0;
    font-size: 13px;
    text-align: center;
}

.identity-card {
    background: var(--color-accent);
    border: 1px solid #bbf7d0;
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.identity-card .identity-name {
    font-weight: 600;
    color: #166534;
}

.status-pill {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
}

.status-pill.confirmed {
    background: #d1fae5;
    color: #065f46;
}

.status-pill.waitlist {
    background: #fef3c7;
    color: #92400e;
}

.status-pill.none {
    background: var(--color-bg);
    color: var(--color-muted);
}

.status-pill.closed {
    background: #fee2e2;
    color: #991b1b;
}

.match-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--color-border);
}

.match-card.active {
    border-left-color: var(--color-success);
}

.match-card.closed {
    border-left-color: var(--color-muted);
}

.match-card.canceled {
    border-left-color: var(--color-danger);
    background: #fef2f2;
}

.match-card.canceled h3 {
    color: var(--color-muted);
    text-decoration: line-through;
}

.status-pill.canceled {
    background: #fee2e2;
    color: #991b1b;
}

.match-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.match-card-header h3 {
    margin: 0;
    color: var(--color-text);
}

.confirm-header {
    text-align: center;
    margin-bottom: 20px;
}

.confirm-header h1 {
    font-size: 22px;
    margin: 0 0 6px 0;
}

.confirm-header p {
    color: var(--color-muted);
    margin: 0;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@media (max-width: 600px) {
    .container {
        padding: 12px;
    }
    .card {
        padding: 16px;
    }
    table th, table td {
        padding: 8px 6px;
    }
    .app-header h1 {
        font-size: 16px;
    }
    nav.app-nav {
        width: 100%;
        justify-content: space-between;
    }
    nav.app-nav a {
        font-size: 13px;
        padding: 4px 8px;
    }
    table {
        font-size: 13px;
    }
}