* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f0f2f5;
    color: #333;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

/* Login */
.login-box {
    background: white;
    border-radius: 8px;
    padding: 2.5rem;
    margin-top: 5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.login-box h1 { margin-bottom: 0.5rem; }
.subtitle { color: #666; margin-bottom: 1.5rem; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.3rem; font-weight: 500; }
.form-group input {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

/* Alerts */
.error {
    background: #fee;
    border: 1px solid #fcc;
    color: #c00;
    padding: 0.6rem 0.8rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.success {
    background: #efe;
    border: 1px solid #cfc;
    color: #060;
    padding: 0.6rem 0.8rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.user-info { display: flex; align-items: center; gap: 1rem; color: #666; }
.logout { color: #e00; text-decoration: none; }
.logout:hover { text-decoration: underline; }

/* Buttons */
button[type=submit], .btn {
    padding: 0.5rem 1rem;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

button[type=submit]:hover, .btn:hover { background: #1d4ed8; }

.btn-secondary {
    padding: 0.5rem 1rem;
    background: #e5e7eb;
    color: #333;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary:hover { background: #d1d5db; }

.btn-danger {
    padding: 0.4rem 0.8rem;
    background: #dc2626;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
}

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

/* Dashboard PDF list */
.pdf-list { display: flex; flex-direction: column; gap: 0.75rem; }

.pdf-item {
    display: flex;
    align-items: center;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    gap: 1rem;
}

.pdf-icon { font-size: 1.5rem; }
.pdf-name { flex: 1; font-weight: 500; }
.empty { color: #888; text-align: center; padding: 2rem; }

/* Admin cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.card h2 { margin-bottom: 1rem; font-size: 1.1rem; }
.card h3 { margin-bottom: 0.5rem; font-size: 1rem; color: #555; }

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

.form-row input, .form-row select {
    padding: 0.5rem 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
    flex: 1;
    min-width: 150px;
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.list-item:last-child { border-bottom: none; }
.item-actions { display: flex; align-items: center; gap: 1rem; }
.muted { color: #888; font-size: 0.85rem; }

/* Badges */
.badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

.badge.admin { background: #dbeafe; color: #1d4ed8; }
.badge.user { background: #f3f4f6; color: #555; }

/* Assign block */
.assign-block {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #f0f0f0;
}

.assign-block:last-child { border-bottom: none; }

.assign-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0;
}

/* Error page */
.error-box {
    text-align: center;
    margin-top: 8rem;
}

.error-box h1 {
    font-size: 5rem;
    color: #dc2626;
    margin-bottom: 1rem;
}

.error-box p {
    color: #666;
    margin-bottom: 2rem;
}