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

:root {
    --bg: #f5f5f5;
    --card: #fff;
    --text: #333;
    --text-light: #888;
    --border: #e5e5e5;
    --primary: #4a7aff;
    --primary-hover: #3a66e0;
    --danger: #e53e3e;
    --danger-hover: #c53030;
    --success: #38a169;
    --radius: 10px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* --- Login --- */

.login-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}

.login-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: 0 2px 12px rgba(0,0,0,.08);
    padding: 2.5rem 2rem;
    max-width: 380px;
    width: 100%;
}

.login-card h1 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* --- Layout --- */

.app-header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: .75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 10;
}

.app-header h1 {
    font-size: 1.1rem;
    font-weight: 700;
}

.app-header .actions {
    display: flex;
    gap: .5rem;
    align-items: center;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* --- Forms --- */

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    color: #555;
    margin-bottom: .3rem;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: .6rem .75rem;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: .9rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* --- Buttons --- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .35rem;
    padding: .55rem 1rem;
    border: none;
    border-radius: 8px;
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s;
    text-decoration: none;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-ghost { background: transparent; color: var(--text-light); border: 1.5px solid var(--border); }
.btn-ghost:hover { background: #f0f0f0; }
.btn-full { width: 100%; margin-top: .5rem; }
.btn-sm { padding: .35rem .65rem; font-size: .78rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* --- Table --- */

.doc-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 1px 6px rgba(0,0,0,.05);
}

.doc-table th,
.doc-table td {
    padding: .65rem .85rem;
    text-align: left;
    font-size: .85rem;
    border-bottom: 1px solid var(--border);
}

.doc-table th {
    background: #fafafa;
    font-weight: 600;
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-light);
}

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

.doc-table .actions-cell {
    white-space: nowrap;
    display: flex;
    gap: .3rem;
}

/* --- Upload area --- */

.upload-area {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: 0 1px 6px rgba(0,0,0,.05);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.upload-area h2 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.file-drop {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    color: var(--text-light);
    cursor: pointer;
    transition: border-color .15s, background .15s;
    margin-bottom: 1rem;
}

.file-drop.dragover {
    border-color: var(--primary);
    background: #f0f4ff;
}

.file-drop .selected {
    color: var(--text);
    font-weight: 600;
}

/* --- Badges --- */

.badge {
    display: inline-block;
    padding: .15rem .5rem;
    border-radius: 4px;
    font-size: .72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .03em;
}

.badge-active { background: #e6ffed; color: #22543d; }
.badge-revoked { background: #fee; color: #9b2c2c; }
.badge-expired { background: #fefce8; color: #92400e; }
.badge-password { background: #ebf4ff; color: #2b6cb0; }

/* --- Alert --- */

.alert {
    padding: .65rem .85rem;
    border-radius: 8px;
    font-size: .85rem;
    margin-bottom: 1rem;
}

.alert-error { background: #fef2f2; color: #c53030; }
.alert-success { background: #f0fff4; color: #22543d; }

/* --- Modal --- */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 1rem;
}

.modal {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 450px;
    width: 100%;
    box-shadow: 0 8px 30px rgba(0,0,0,.15);
}

.modal h2 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.modal .modal-actions {
    display: flex;
    gap: .5rem;
    justify-content: flex-end;
    margin-top: 1.25rem;
}

/* --- Misc --- */

.empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.link-copy {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
    color: var(--primary);
    cursor: pointer;
    font-size: .8rem;
    font-weight: 500;
}

.link-copy:hover { text-decoration: underline; }

.hidden { display: none !important; }

@media (max-width: 640px) {
    .form-row { grid-template-columns: 1fr; }
    .doc-table th:nth-child(3),
    .doc-table td:nth-child(3) { display: none; }
}