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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #0a0a0a;
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 1rem 2rem;
}

/* Nav */
nav {
    width: 100%;
    background: #111;
    border-bottom: 1px solid #222;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.nav-inner {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 3rem;
}

.nav-brand {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.85rem;
}

.nav-links a {
    color: #888;
    text-decoration: none;
}

.nav-links a:hover {
    color: #fff;
}

.nav-email {
    color: #666;
}

.nav-logout {
    color: #888;
}

.container {
    width: 100%;
    max-width: 900px;
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0;
    color: #fff;
}

h2 {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1rem;
    color: #ccc;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    gap: 0.75rem;
}

.help-btn {
    background: transparent;
    color: #888;
    border: 1px solid #333;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    font-size: 0.9rem;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-btn:hover {
    color: #fff;
    border-color: #666;
}

.help-panel {
    display: none;
    background: #141414;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.help-panel.open {
    display: block;
}

.help-panel h2 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 1rem;
}

.help-panel h3 {
    font-size: 0.85rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 1rem;
    margin-bottom: 0.4rem;
}

.help-panel p {
    font-size: 0.9rem;
    color: #ccc;
    margin-bottom: 0.25rem;
}

.help-panel code {
    background: #1a1a1a;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

.help-panel pre {
    background: #1a1a1a;
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 0.8rem;
    color: #6cb4ff;
    line-height: 1.5;
}

/* Login / auth forms */
.login-container {
    max-width: 360px;
    margin-top: 20vh;
    text-align: center;
}

.login-container h1 {
    margin-bottom: 1rem;
}

.login-container form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.subtitle {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.form-link {
    margin-top: 1rem;
    font-size: 0.85rem;
}

.form-link a {
    color: #6cb4ff;
    text-decoration: none;
}

.form-link a:hover {
    text-decoration: underline;
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="file"],
select {
    background: #1a1a1a;
    border: 1px solid #333;
    color: #e0e0e0;
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    font-size: 0.95rem;
}

input:focus, select:focus {
    outline: none;
    border-color: #555;
}

button {
    background: #fff;
    color: #000;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 500;
}

button:hover {
    background: #ddd;
}

.btn-small {
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
    background: #333;
    color: #ccc;
    border-radius: 4px;
}

.btn-small:hover {
    background: #444;
    color: #fff;
}

.error {
    color: #ff4444;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.success {
    color: #4caf50;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

/* Folder grid */
.folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.folder-card {
    background: #141414;
    border: 1px solid #222;
    border-radius: 8px;
    padding: 1.25rem;
    text-decoration: none;
    color: #e0e0e0;
    transition: border-color 0.2s;
}

.folder-card:hover {
    border-color: #444;
}

.folder-name {
    font-weight: 600;
    font-size: 1rem;
    color: #fff;
    margin-bottom: 0.5rem;
}

.folder-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: #888;
}

.folder-mode {
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.mode-private {
    background: #2a1a1a;
    color: #ff8888;
}

.mode-public {
    background: #1a2a1a;
    color: #88ff88;
}

.mode-password {
    background: #2a2a1a;
    color: #ffcc44;
}

/* Upload */
.upload-form {
    margin-bottom: 2rem;
}

.drop-zone {
    border: 2px dashed #333;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    margin-bottom: 0.75rem;
    transition: border-color 0.2s;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: #666;
}

.drop-zone p {
    color: #888;
    font-size: 0.9rem;
}

.drop-zone input[type="file"] {
    display: none;
}

/* File list */
.file-list table {
    width: 100%;
    border-collapse: collapse;
}

.file-list th {
    text-align: left;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid #333;
    color: #888;
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.file-list td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid #1a1a1a;
    font-size: 0.9rem;
}

.file-list a {
    color: #6cb4ff;
    text-decoration: none;
}

.file-list a:hover {
    text-decoration: underline;
}

.delete-btn {
    background: transparent;
    color: #888;
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border: 1px solid #333;
}

.delete-btn:hover {
    color: #ff4444;
    border-color: #ff4444;
}

.empty {
    color: #666;
    text-align: center;
    padding: 2rem;
}

.text-muted {
    color: #666;
    font-size: 0.85rem;
}

/* Admin */
.admin-section {
    margin-bottom: 3rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.admin-table th {
    text-align: left;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid #333;
    color: #888;
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.admin-table td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid #1a1a1a;
    font-size: 0.9rem;
}

.admin-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.admin-form input,
.admin-form select {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
}

.admin-form button {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.inline-form {
    display: inline-flex;
}

.admin-folder {
    background: #141414;
    border: 1px solid #222;
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

.admin-folder-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.admin-folder-edit {
    margin-bottom: 0.75rem;
}

.admin-folder-access {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.access-badge {
    background: #1a2a3a;
    color: #6cb4ff;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.badge-remove {
    background: none;
    border: none;
    color: #6cb4ff;
    font-size: 1rem;
    padding: 0;
    cursor: pointer;
    line-height: 1;
}

.badge-remove:hover {
    color: #ff4444;
}

@media (max-width: 600px) {
    .file-list td:nth-child(3),
    .file-list th:nth-child(3) {
        display: none;
    }
    .admin-table td:nth-child(3),
    .admin-table th:nth-child(3) {
        display: none;
    }
    .folder-grid {
        grid-template-columns: 1fr;
    }
}