#authSection {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

#authSection.hidden {
    display: none;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-container h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent-blue);
}

.tabs {
    display: flex;
    margin-bottom: 1.5rem;
}

.tab {
    flex: 1;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

.tab:first-child { border-radius: 6px 0 0 6px; }
.tab:last-child { border-radius: 0 6px 6px 0; border-left: none; }
.tab.active { background: var(--bg-tertiary); color: var(--text-primary); }

.tabs.hidden { display: none; }

.set-password-message {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    text-align: center;
}

.set-password-message span {
    color: var(--accent-blue);
    font-weight: 600;
}

#setPasswordForm button[type="submit"] {
    width: 100%;
    margin-bottom: 0.5rem;
}

#setPasswordForm .btn-secondary {
    width: 100%;
}

.auth-form {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.875rem;
}

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

input[type="date"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
}

:root input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
}

.form-group input[type="checkbox"] {
    width: auto;
    padding: 0;
    border: none;
    background: none;
    vertical-align: middle;
    margin-right: 0.5rem;
}

.form-group label.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: var(--text-primary);
}

.form-group input[type="number"] {
    -moz-appearance: textfield;
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    box-sizing: border-box;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input[type="number"]::-webkit-inner-spin-button,
.form-group input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

[data-theme="light"] input[type="date"]::-webkit-calendar-picker-indicator {
    filter: none;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row .form-group {
    flex: 1;
    min-width: 0;
}

.form-row-stretch {
    align-items: stretch;
}

.form-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1;
    min-width: 0;
}

.form-column .form-row {
    flex-shrink: 0;
}

.form-group-grow {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.form-group-grow .link-chips {
    flex: 1;
    overflow-y: auto;
}

.form-row .form-group-narrow {
    flex: 0.4;
}

.form-row .form-group input,
.form-row .form-group select,
.form-row .form-group .custom-dropdown {
    width: 100%;
    box-sizing: border-box;
}

button[type="submit"],
.btn-primary {
    padding: 0.625rem 1rem;
    background: var(--btn-primary-bg);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

button[type="submit"]:hover,
.btn-primary:hover {
    background: var(--btn-primary-hover);
}

button[type="submit"]:disabled,
.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    padding: 0.625rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    white-space: nowrap;
}

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

.btn-danger {
    padding: 0.625rem 1rem;
    background: var(--accent-red);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 0.875rem;
    white-space: nowrap;
    cursor: pointer;
}

.btn-danger:hover {
    background: #f85149;
}

.blocker-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    min-height: 28px;
}

.blocker-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: var(--accent-red);
    color: #fff;
    border-radius: 4px;
    font-size: 0.75rem;
}

.blocker-chip-remove {
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 0;
    font-size: 1rem;
    line-height: 1;
    opacity: 0.7;
}

.blocker-chip-remove:hover {
    opacity: 1;
}

.blocker-select {
    width: 100%;
}

.btn-back {
    padding: 0.5rem 0.75rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
}

.btn-back:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.btn-close:hover {
    color: var(--text-primary);
}

#logoutButton {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
}

#logoutButton:hover {
    background: var(--border-color);
}

.custom-dropdown {
    position: relative;
    width: 100%;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    text-align: left;
}

.dropdown-toggle:hover {
    border-color: var(--accent-blue);
}

.dropdown-arrow {
    font-size: 0.6rem;
    color: var(--text-secondary);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 100%;
    max-height: 400px;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    z-index: 100;
}

.dropdown-menu.dropup {
    top: auto;
    bottom: 100%;
    margin-top: 0;
    margin-bottom: 4px;
}

.form-dropdown {
    position: relative;
    width: 100%;
}

.form-dropdown > select {
    display: none;
}

.form-dropdown .dropdown-toggle {
    width: 100%;
    text-align: left;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.form-dropdown .dropdown-toggle:hover {
    border-color: var(--accent-blue);
}

.form-dropdown .dropdown-menu {
    left: 0;
    right: 0;
    max-height: 200px;
    box-shadow: 0 8px 24px var(--shadow);
    z-index: 100;
}

.dropdown-menu.hidden {
    display: none;
}

.dropdown-search {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
    box-sizing: border-box;
    outline: none;
    position: sticky;
    top: 0;
    z-index: 1;
}

.dropdown-item {
    padding: 0.6rem 0.75rem;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-light);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
}

.dropdown-item.selected {
    background: #1f6feb33;
    color: var(--accent-blue);
}

.dropdown-item.closed {
    opacity: 0.5;
}

.dropdown-item.closed:hover {
    opacity: 0.7;
}

.dropdown-item.placeholder {
    color: var(--text-secondary);
}

.error {
    margin-top: 1rem;
    padding: 0.75rem;
    background: #3d1a1a;
    border: 1px solid var(--accent-red);
    border-radius: 6px;
    color: #f85149;
    font-size: 0.875rem;
}

.success {
    margin-top: 1rem;
    padding: 0.75rem;
    background: #1a3d1a;
    border: 1px solid var(--accent-green);
    border-radius: 6px;
    color: #3fb950;
    font-size: 0.875rem;
}

.subtitle {
    color: var(--text-secondary);
    margin-top: 0.5rem;
    text-align: center;
}

.auth-form h2 {
    margin: 1.5rem 0 1rem;
    font-size: 1rem;
    color: var(--accent-blue);
}

.auth-form h2:first-of-type {
    margin-top: 0;
}

.secondary-btn {
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.875rem;
}

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

.required {
    color: var(--accent-red);
    font-weight: normal;
}

.form-group-bordered {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem;
}

.link-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    min-height: 28px;
}

.link-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: #fff;
    cursor: pointer;
    transition: filter 0.15s;
    position: relative;
}

.link-chip:hover {
    filter: brightness(1.15);
}

.link-chip[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 6px;
    padding: 4px 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 10;
    box-shadow: 0 2px 8px var(--shadow);
}

.link-chip[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--border-color);
    z-index: 10;
}

.link-chip svg {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}

.link-chip-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: rgba(0, 0, 0, 0.25);
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    padding: 0;
    font-size: 0.75rem;
    line-height: 1;
    margin-left: 2px;
}

.link-chip-remove:hover {
    background: rgba(0, 0, 0, 0.4);
}

.link-select {
    width: 100%;
}

.link-parent {
    background: #3b82f6;
}

.link-child {
    background: #22c55e;
}

.link-blocker {
    background: #ef4444;
}

.link-blocks {
    background: #f97316;
}

.link-related {
    background: #a78bfa;
}

.link-add-row {
    display: flex;
    gap: 0.5rem;
}

.link-add-row > .form-dropdown:first-child {
    flex: 0 0 110px;
}

.link-add-row > .form-dropdown:last-child {
    flex: 1;
}