:root {
    --color-primary: #1a1a2e;
    --color-bg: #f0f2f5;
    --color-text: #333;
    --color-muted: #999;
    --color-border: #e0e0e0;
    --color-border-light: #d0d0d0;
    --color-danger: #e74c3c;
    --color-success: #2ecc71;
    --color-info: #3498db;
    --color-archive: #95a5a6;
    --color-cat-mileage: #e74c3c;
    --color-cat-calendar: #3498db;
    --color-cat-todo: #2ecc71;
    --color-cat-note: #f39c12;
    --color-cat-link: #9b59b6;
}

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

html, body {
    height: 100vh;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-primary);
    display: flex;
    flex-direction: column;
}

header {
    background: var(--color-primary);
    color: #fff;
    padding: 1.2rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    line-height: 1;
}

.header-brand {
    display: flex;
    flex-direction: column;
}

.header-logo {
    width: 32px;
    height: 32px;
    vertical-align: middle;
    transform: translateY(2px);
}

.version {
    font-size: 0.65rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.35);
    letter-spacing: 0;
    margin-left: 2.5rem;
}

.login-logo {
    width: 48px;
    height: 48px;
    vertical-align: middle;
    margin-right: 0.3rem;
}

.stats {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
}

.stats .stat {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
}

/* Filters */
.filters {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
    flex-shrink: 0;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    background: #fff;
    color: #555;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.filter-sep {
    width: 1px;
    background: var(--color-border-light);
    align-self: stretch;
    margin: 0 0.3rem;
}

.filter-archive {
    border-style: dashed;
}

.filter-archive.active {
    background: var(--color-archive);
    border-color: var(--color-archive);
    border-style: solid;
}

.search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    padding: 0.45rem 1.8rem 0.45rem 0.8rem;
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    font-size: 0.9rem;
    outline: none;
    width: 180px;
    transition: border-color 0.2s, width 0.2s;
}

.search-input:focus {
    border-color: var(--color-primary);
    width: 240px;
}

.search-clear {
    position: absolute;
    right: 6px;
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: var(--color-border-light);
    color: #666;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}

.search-clear:hover {
    background: var(--color-muted);
    color: #fff;
}

.search-clear.hidden {
    display: none;
}

/* Context panel */
.context-panel {
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 0.8rem 2rem;
    flex-shrink: 0;
}

.context-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.context-header h2 {
    font-size: 0.9rem;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.context-toggle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--color-border-light);
    background: #fff;
    cursor: pointer;
    font-size: 1rem;
    color: #666;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.context-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.context-body.hidden {
    display: none;
}

.context-list {
    margin: 0.6rem 0;
}

.context-fact {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem 0.6rem;
    background: #f8f9fa;
    border-radius: 6px;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
}

.context-actions {
    display: flex;
    gap: 0.3rem;
    align-items: center;
    flex-shrink: 0;
}

.context-actions.hidden {
    display: none;
}

.context-edit,
.context-remove {
    cursor: pointer;
    color: #ccc;
    font-size: 1rem;
    padding: 0 0.2rem;
    line-height: 1;
}

.context-edit:hover {
    color: var(--color-info);
}

.context-remove:hover {
    color: var(--color-danger);
}

.context-edit-input {
    flex: 1;
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--color-info);
    border-radius: 4px;
    font-size: 0.9rem;
    outline: none;
}

.context-empty {
    font-size: 0.85rem;
    color: #aaa;
    padding: 0.3rem 0;
}

.context-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.4rem;
}

.context-form input {
    flex: 1;
    padding: 0.45rem 0.7rem;
    border: 1px solid var(--color-border-light);
    border-radius: 6px;
    font-size: 0.9rem;
}

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

.btn-add {
    background: var(--color-primary);
    color: #fff;
}

/* Messages grid */
.messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
    align-content: start;
}

.message-card {
    background: #fff;
    border-radius: 10px;
    padding: 1.2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: box-shadow 0.2s, transform 0.15s;
    border-left: 4px solid #ccc;
    position: relative;
    padding-bottom: 2.5rem;
}

.message-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

.card-actions {
    position: absolute;
    bottom: 0.6rem;
    left: 1.2rem;
    display: flex;
    gap: 0.2rem;
}

.card-action {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
    cursor: pointer;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background 0.15s;
    line-height: 1;
}

.card-action:hover {
    background: rgba(0, 0, 0, 0.12);
}

.card-action-danger:hover {
    background: rgba(231, 76, 60, 0.15);
}

.card-action-success:hover {
    background: rgba(46, 204, 113, 0.15);
}

/* Category colors via CSS variables */
[data-category="car_mileage"]    { --cat-color: var(--color-cat-mileage); }
[data-category="calendar_event"] { --cat-color: var(--color-cat-calendar); }
[data-category="todo"]           { --cat-color: var(--color-cat-todo); }
[data-category="note"]           { --cat-color: var(--color-cat-note); }
[data-category="link"]           { --cat-color: var(--color-cat-link); }

.message-card[data-category] { border-left-color: var(--cat-color, #ccc); }
.card-category[data-category] { color: var(--cat-color, #666); }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.6rem;
}

.card-category {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-meta {
    font-size: 0.75rem;
    color: var(--color-muted);
    background: #f5f5f5;
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
}

.card-id {
    font-weight: 600;
    color: #bbb;
}

.card-summary {
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 0.8rem;
    color: var(--color-text);
}

.card-labels {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.label-tag {
    font-size: 0.75rem;
    background: var(--color-bg);
    color: #666;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.6rem;
}

.card-time {
    font-size: 0.75rem;
    color: #aaa;
}

.card-export-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.1rem 0.5rem;
    border-radius: 10px;
    background: #e8f8f0;
    color: var(--color-success);
    text-transform: capitalize;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 0.8rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-muted);
}

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

.detail-section {
    margin-bottom: 1.2rem;
}

.detail-section h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-muted);
    margin-bottom: 0.3rem;
}

.detail-section p,
.detail-section pre {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
}

.detail-section pre {
    background: #f5f5f5;
    padding: 0.8rem;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 0.85rem;
}

/* Category select */
.category-select {
    padding: 0.4rem 0.7rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    background: #fff;
    transition: border-color 0.2s;
    outline: none;
}

.category-select:hover,
.category-select:focus {
    border-color: var(--color-primary);
}

.detail-category-row {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.edit-hint {
    cursor: pointer;
    color: #ccc;
    font-size: 0.85rem;
    margin-left: 0.3rem;
}

.edit-hint:hover {
    color: var(--color-info);
}

.editable-summary {
    cursor: default;
}

.edit-summary-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--color-info);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    line-height: 1.5;
    resize: vertical;
    outline: none;
}

.label-add-row {
    display: flex;
    gap: 0.4rem;
    margin-top: 0.5rem;
}

.label-add-input {
    flex: 1;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    font-size: 0.8rem;
    outline: none;
}

.label-add-input:focus {
    border-color: var(--color-primary);
}

.btn-small {
    padding: 0.25rem 0.6rem;
    font-size: 0.85rem;
    border-radius: 12px;
}

.detail-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: opacity 0.2s;
}

.btn:hover { opacity: 0.8; }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-export { background: var(--color-success); color: #fff; }
.btn-complete { background: var(--color-info); color: #fff; }
.btn-completed { background: var(--color-archive); color: #fff; cursor: default; opacity: 0.7; }
.btn-archive { background: var(--color-archive); color: #fff; }
.btn-unarchive { background: var(--color-info); color: #fff; }
.btn-cancel { background: var(--color-border); color: var(--color-text); }

.export-status {
    font-size: 0.8rem;
    color: var(--color-success);
    font-weight: 600;
}

.completed-status {
    color: var(--color-info);
}

/* Removable labels */
.label-removable {
    cursor: default;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: background 0.15s;
}

.label-removable:hover {
    background: #e8e8eb;
}

.label-remove {
    cursor: pointer;
    font-size: 0.85rem;
    color: #aaa;
    line-height: 1;
    font-weight: 600;
}

.label-remove:hover {
    color: var(--color-danger);
}

/* Confirm minimodal */
.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.confirm-overlay.hidden {
    display: none;
}

.confirm-box {
    background: #fff;
    border-radius: 10px;
    padding: 1.5rem 2rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 320px;
    width: 90%;
}

.confirm-box p {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 1.2rem;
}

.confirm-actions {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
}

.confirm-actions .btn {
    min-width: 90px;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-muted);
    font-size: 1.1rem;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 250;
}

.loading-overlay.hidden {
    display: none;
}

.loading-box {
    background: #fff;
    border-radius: 12px;
    padding: 2rem 2.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    text-align: center;
    min-width: 200px;
}

.loading-box p {
    margin-top: 1rem;
    font-size: 0.95rem;
    color: var(--color-text);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Toast notifications */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
    align-items: center;
}

.toast {
    padding: 0.7rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    pointer-events: auto;
    cursor: pointer;
    animation: toastIn 0.3s ease-out;
    max-width: 360px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toast-icon {
    flex-shrink: 0;
    font-size: 1.1rem;
    line-height: 1;
}

.toast.toast-error { background: var(--color-danger); }
.toast.toast-success { background: var(--color-success); }
.toast.toast-info { background: var(--color-info); }

.toast.toast-out {
    animation: toastOut 0.3s ease-in forwards;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(100%); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(100%); }
}

/* Login page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-box {
    background: var(--color-primary);
    border-radius: 12px;
    padding: 3rem 2.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 360px;
    width: 90%;
}

.login-box h1 {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 1.5rem;
}

.login-error {
    background: rgba(231, 76, 60, 0.15);
    color: #f5a5a0;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.btn-google {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    background: #fff;
    color: var(--color-primary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    transition: opacity 0.2s;
}

.btn-google:hover {
    opacity: 0.85;
}

.login-version {
    position: fixed;
    bottom: 1rem;
    right: 1.5rem;
    font-size: 0.75rem;
    color: var(--color-primary);
}

/* User info */
.user-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.user-name {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    font-weight: 500;
}

.logout-link {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    transition: all 0.2s;
}

.logout-link:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 640px) {
    header { padding: 1rem; }
    .filters { padding: 0.8rem 1rem; }
    .messages { padding: 1rem; grid-template-columns: 1fr; }
    .toast-container { left: 50%; right: auto; width: 90%; }
    .toast { max-width: 100%; }
}