:root {
    --bg: #0f1117;
    --card-bg: #171a23;
    --border: #2a2e3a;
    --text: #e7e9ee;
    --muted: #9aa1b1;
    --primary: #6c5ce7;
    --primary-hover: #5b4bd1;
    --success: #2ecc71;
    --danger: #e74c3c;
    --warning: #f39c12;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}

.brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 20px;
}
.nav-links a:hover { color: var(--text); }
.nav-user { color: var(--primary); margin-left: 20px; font-weight: 600; }

.container {
    max-width: 780px;
    margin: 40px auto;
    padding: 0 16px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 24px;
}

h1 { margin-top: 0; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; color: var(--muted); font-size: 0.9rem; }

.input {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #0f1117;
    color: var(--text);
    font-size: 1rem;
}
.input:focus { outline: none; border-color: var(--primary); }

.format-options { display: flex; gap: 16px; flex-wrap: wrap; }
.format-option {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #0f1117;
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-success { background: var(--success); color: #05261a; font-weight: 600; }

.hint { color: var(--muted); font-size: 0.9rem; }
.error-text { color: var(--danger); }

.auth-card { max-width: 420px; margin: 0 auto; }
.auth-switch { color: var(--muted); font-size: 0.9rem; margin-top: 16px; }
.auth-switch a { color: var(--primary); }

.flash-container { margin-bottom: 20px; }
.flash {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 10px;
    font-size: 0.95rem;
}
.flash-success { background: rgba(46, 204, 113, 0.15); color: var(--success); border: 1px solid var(--success); }
.flash-danger { background: rgba(231, 76, 60, 0.15); color: var(--danger); border: 1px solid var(--danger); }
.flash-warning { background: rgba(243, 156, 18, 0.15); color: var(--warning); border: 1px solid var(--warning); }
.flash-info { background: rgba(108, 92, 231, 0.15); color: var(--primary); border: 1px solid var(--primary); }

.table { width: 100%; border-collapse: collapse; margin-top: 16px; }
.table th, .table td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}
.table th { color: var(--muted); font-weight: 600; }

.badge {
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.8rem;
    background: var(--border);
}
.badge-active { background: rgba(46, 204, 113, 0.2); color: var(--success); }
.badge-used { background: rgba(231, 76, 60, 0.2); color: var(--danger); }

.inline-form { margin-bottom: 16px; }