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

:root {
    --bg-body: #020617;
    --bg-card: #020617;
    --bg-card-elevated: #020617;
    --border-subtle: #1f2937;
    --text-main: #e5e7eb;
    --text-muted: #9ca3af;
    --accent: #38bdf8;
    --accent-2: #4f46e5;
    --danger: #b91c1c;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top left, #0b1120, #020617 50%);
    color: var(--text-main);
}

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.5rem 1.5rem 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 42px;
    height: 42px;
    border-radius: 16px;
    background: radial-gradient(circle at 30% 30%, var(--accent), #0b1120);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.5);
}

.title-block h1 {
    margin: 0;
    font-size: 1.5rem;
    color: #f9fafb;
}

.subtitle {
    margin: 0.15rem 0 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.main {
    flex: 1;
    padding: 1.5rem;
    display: flex;
    justify-content: center;
}

.card-main {
    width: 100%;
    max-width: 780px;
}

.card {
    background: rgba(2, 6, 23, 0.95);
    border-radius: 1.25rem;
    padding: 1.5rem 1.75rem 1.75rem;
    border: 1px solid rgba(15, 23, 42, 0.9);
    box-shadow:
        0 24px 80px rgba(15, 23, 42, 0.95),
        0 0 0 1px rgba(148, 163, 184, 0.05);
}

.card-header h2 {
    margin: 0 0 0.25rem;
    font-size: 1.25rem;
}

.card-header p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form {
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.form label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.form-row input[type="url"] {
    flex: 1 1 220px;
    padding: 0.75rem 0.9rem;
    border-radius: 999px;
    border: 1px solid #334155;
    background: rgba(15, 23, 42, 0.95);
    color: var(--text-main);
    font-size: 0.9rem;
}

.form-row input[type="url"]::placeholder {
    color: #6b7280;
}

.form-row input[type="url"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.4);
}

.form-row button {
    padding: 0.75rem 1.4rem;
    border-radius: 999px;
    border: none;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #f9fafb;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    position: relative;
}

.form-row button:hover {
    filter: brightness(1.05);
}

.form-row button.loading {
    opacity: 0.8;
}

.spinner {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    border: 2px solid rgba(15, 23, 42, 0.3);
    border-top-color: #f9fafb;
    animation: spin 0.7s linear infinite;
    display: none;
}

button.loading .spinner {
    display: inline-block;
}

.hint {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.alert {
    margin-top: 1rem;
    padding: 0.75rem 0.9rem;
    border-radius: 0.75rem;
    font-size: 0.85rem;
}

.alert-error {
    background: rgba(127, 29, 29, 0.2);
    border: 1px solid rgba(248, 113, 113, 0.6);
    color: #fecaca;
}

.hidden {
    display: none;
}

.result {
    margin-top: 1.5rem;
    border-top: 1px solid rgba(30, 64, 175, 0.4);
    padding-top: 1.25rem;
}

.result-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
    margin-bottom: 1.25rem;
}

@media (min-width: 720px) {
    .result-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

h3 {
    margin: 0 0 0.35rem;
    font-size: 0.95rem;
}

.url {
    display: block;
    padding: 0.6rem 0.7rem;
    border-radius: 0.7rem;
    background: #020617;
    border: 1px solid #111827;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.8rem;
    word-break: break-all;
    color: #e5e7eb;
}

.redirect-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.redirect-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0;
    border-bottom: 1px solid rgba(15, 23, 42, 0.9);
}

.redirect-list li:last-child {
    border-bottom: none;
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 72px;
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    background: rgba(56, 189, 248, 0.12);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
}

.redirect-url {
    font-size: 0.8rem;
    color: #d1d5db;
    word-break: break-all;
}

.footer {
    border-top: 1px solid var(--border-subtle);
    padding: 0.75rem 1.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}

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