:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: #60a5fa;
    --border-color: #333333;
    --error: #ef4444;
    --success: #22c55e;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
}

/* Cards */
.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
}

.card.centered {
    max-width: 400px;
    margin: 4rem auto;
    text-align: center;
}

.card h1 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.card h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.muted {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

input[type="email"],
input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

input::placeholder {
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.btn-danger {
    background-color: var(--error);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

/* Links */
.link {
    color: var(--accent-light);
    text-decoration: none;
}

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

/* Error messages */
.error {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.error-message {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Page layouts */
.dashboard,
.bookmarks {
    min-height: 100vh;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.header h1 {
    font-size: 1.5rem;
}

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

.user-email {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.inline {
    display: inline;
}

.main {
    max-width: 800px;
}

/* Bookmarks layout */
.bookmarks-layout {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    align-items: flex-start;
}

.bookmark-list {
    flex: 1 1 70%;
    min-width: 0;
}

.bookmark-list h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.add-form {
    flex: 0 0 28%;
}

.add-form .card {
    position: sticky;
    top: 2rem;
}

.add-form h2 {
    margin-bottom: 1rem;
}

/* Bookmark items */
.bookmark-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: background-color 0.2s, border-color 0.2s;
}

.bookmark-item:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

.bookmark-favicon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.bookmark-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bookmark-date {
    flex-shrink: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-right: 0.5rem;
}

.bookmark-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
    text-decoration: none;
    color: var(--text-primary);
}

/* Bookmark menu */
.bookmark-menu {
    position: relative;
}

.menu-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    line-height: 1;
}

.menu-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.menu-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    min-width: 120px;
    z-index: 100;
    overflow: hidden;
}

.menu-dropdown.show {
    display: block;
}

.menu-dropdown button {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    font-size: 0.875rem;
}

.menu-dropdown button:hover {
    background-color: var(--bg-tertiary);
}

.menu-dropdown button.danger {
    color: var(--error);
}

.menu-dropdown button.danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    max-width: 400px;
    width: 90%;
}

.modal-content h2 {
    margin-bottom: 1rem;
}

.modal-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    margin-top: 1rem;
}

.modal-actions .btn {
    width: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .bookmarks-layout {
        flex-direction: column-reverse;
    }

    .bookmark-list,
    .add-form {
        flex: 1 1 100%;
    }

    .add-form .card {
        position: static;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .card {
        padding: 1.5rem;
    }

    .card.centered {
        margin: 2rem auto;
    }

    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .header-right {
        flex-direction: column;
    }
}