/* ============================================================================
   CSS CUSTOM PROPERTIES & THEME
   ============================================================================ */

:root {
    --color-bg: #222222;
    --color-fg: #aaaaaa;
    --color-muted: #555555;
    --color-border: #444444;
    --color-accent: #dddddd;
    --color-hover: #333333;
    --widget-radius: 0px;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

/* ============================================================================
   GLOBAL STYLES
   ============================================================================ */

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

body {
    font-family: var(--font-mono);
    font-size: 14px;
    background-color: var(--color-bg);
    color: var(--color-fg);
    line-height: 1.6;
    overflow-x: hidden;
    user-select: none;
}

#app {
    min-height: 100vh;
    padding: 20px;
    position: relative;
}

/* ============================================================================
   SETTINGS BUTTON
   ============================================================================ */

.settings-trigger {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--widget-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--color-accent);
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 1000;
}

.settings-trigger:hover {
    background-color: var(--color-hover);
    border-color: var(--color-accent);
    transform: rotate(90deg);
}

/* ============================================================================
   GRID LAYOUT
   ============================================================================ */

.grid-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 10px;
}

@media (min-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .grid-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================================================
   WIDGET STYLES
   ============================================================================ */

.widget {
    background-color: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--widget-radius);
    padding: 16px;
    transition: border-color 0.2s ease;
    animation: fadeIn 0.3s ease;
}

.widget:hover {
    border-color: var(--color-muted);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.widget-header {
    color: var(--color-accent);
    font-weight: bold;
    margin-bottom: 12px;
    font-size: 12px;
    text-transform: lowercase;
    letter-spacing: 0.5px;
}

.widget-body {
    color: var(--color-fg);
}

/* ============================================================================
   SEARCH WIDGET
   ============================================================================ */

.search-container {
    width: 100%;
}

.search-form {
    display: flex;
    gap: 8px;
    width: 100%;
}

.search-input {
    flex: 1;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 10px 12px;
    color: var(--color-fg);
    font-family: var(--font-mono);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    border-color: var(--color-accent);
}

.search-input::placeholder {
    color: var(--color-muted);
}

.search-engine {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 10px 12px;
    color: var(--color-fg);
    font-family: var(--font-mono);
    font-size: 14px;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s ease;
}

.search-engine:hover,
.search-engine:focus {
    border-color: var(--color-accent);
}

/* ============================================================================
   DATETIME WIDGET
   ============================================================================ */

.datetime-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 10px 0;
}

.time-display {
    font-size: 48px;
    font-weight: bold;
    color: var(--color-accent);
    font-variant-numeric: tabular-nums;
    letter-spacing: -2px;
}

.date-display {
    font-size: 14px;
    color: var(--color-muted);
    text-transform: lowercase;
}

/* ============================================================================
   LINKS WIDGET
   ============================================================================ */

.links-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.link-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.link-category {
    color: var(--color-accent);
    font-weight: bold;
    font-size: 12px;
    text-transform: lowercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.link-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.link-item {
    color: var(--color-fg);
    text-decoration: none;
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    border-radius: 2px;
    font-size: 13px;
    transition: all 0.2s ease;
    display: inline-block;
}

.link-item:hover {
    background-color: var(--color-hover);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ============================================================================
   TODO WIDGET
   ============================================================================ */

.todo-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.todo-form {
    display: flex;
    gap: 8px;
}

.todo-input {
    flex: 1;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 8px 10px;
    color: var(--color-fg);
    font-family: var(--font-mono);
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s ease;
}

.todo-input:focus {
    border-color: var(--color-accent);
}

.todo-input::placeholder {
    color: var(--color-muted);
}

.todo-add-btn {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 8px 16px;
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.todo-add-btn:hover {
    background-color: var(--color-hover);
    border-color: var(--color-accent);
}

.todo-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.todo-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border: 1px solid var(--color-border);
    border-radius: 2px;
    transition: all 0.2s ease;
}

.todo-item:hover {
    background-color: var(--color-hover);
}

.todo-item.done .todo-text {
    text-decoration: line-through;
    color: var(--color-muted);
}

.todo-checkbox {
    cursor: pointer;
    width: 16px;
    height: 16px;
}

.todo-text {
    flex: 1;
    font-size: 13px;
    user-select: text;
}

.todo-delete {
    background: none;
    border: none;
    color: var(--color-muted);
    font-size: 20px;
    cursor: pointer;
    padding: 0 8px;
    transition: color 0.2s ease;
}

.todo-delete:hover {
    color: var(--color-accent);
}

/* ============================================================================
   MODAL
   ============================================================================ */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: modalFadeIn 0.2s ease;
}

.modal.hidden {
    display: none;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background-color: var(--color-bg);
    border: 2px solid var(--color-accent);
    border-radius: var(--widget-radius);
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideUp 0.3s ease;
}

@keyframes modalSlideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    color: var(--color-accent);
    font-size: 18px;
    font-weight: bold;
    text-transform: lowercase;
}

.close-btn {
    background: none;
    border: none;
    color: var(--color-muted);
    font-size: 32px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.2s ease;
}

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

.modal-body {
    padding: 20px;
}

/* ============================================================================
   SETTINGS
   ============================================================================ */

.settings-section {
    margin-bottom: 30px;
}

.settings-section h3 {
    color: var(--color-accent);
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 12px;
    text-transform: lowercase;
}

.settings-input,
select.settings-input {
    width: 100%;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 10px 12px;
    color: var(--color-fg);
    font-family: var(--font-mono);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease;
}

.settings-input:focus,
select.settings-input:focus {
    border-color: var(--color-accent);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.checkbox-label span {
    font-size: 14px;
    color: var(--color-fg);
}

/* ============================================================================
   LINK GROUP EDITOR
   ============================================================================ */

.link-group-editor {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 16px;
    margin-bottom: 16px;
}

.link-group-header {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.category-input {
    flex: 1;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 8px 10px;
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: bold;
    outline: none;
}

.category-input:focus {
    border-color: var(--color-accent);
}

.links-editor {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.link-editor-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.link-label-input,
.link-url-input {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    padding: 6px 8px;
    color: var(--color-fg);
    font-family: var(--font-mono);
    font-size: 13px;
    outline: none;
}

.link-label-input {
    width: 120px;
}

.link-url-input {
    flex: 1;
}

.link-label-input:focus,
.link-url-input:focus {
    border-color: var(--color-accent);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn,
.btn-small,
.btn-tiny {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    color: var(--color-fg);
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
}

.btn {
    padding: 10px 20px;
    font-size: 14px;
    margin-right: 10px;
    margin-bottom: 10px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-tiny {
    padding: 4px 8px;
    font-size: 16px;
    line-height: 1;
}

.btn:hover,
.btn-small:hover,
.btn-tiny:hover {
    background-color: var(--color-hover);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-danger {
    border-color: #ff4455;
    color: #ff4455;
}

.btn-danger:hover {
    background-color: rgba(255, 68, 85, 0.1);
    border-color: #ff4455;
    color: #ff4455;
}

/* ============================================================================
   SCROLLBAR
   ============================================================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-muted);
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    #app {
        padding: 10px;
    }
    
    .settings-trigger {
        top: 10px;
        right: 10px;
        width: 36px;
        height: 36px;
        font-size: 18px;
    }
    
    .grid-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .time-display {
        font-size: 36px;
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .link-editor-row {
        flex-wrap: wrap;
    }
    
    .link-label-input,
    .link-url-input {
        width: 100%;
    }
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

.hidden {
    display: none !important;
}

.text-muted {
    color: var(--color-muted);
}

.text-accent {
    color: var(--color-accent);
}

/* ============================================================================
   AUTH MODAL & CONFLICT MODAL
   ============================================================================ */

.large-modal {
    max-width: 1000px;
    width: 95%;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 400px;
    margin: 0 auto;
}

.auth-buttons {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.auth-buttons .btn {
    flex: 1;
    margin: 0;
    text-align: center;
}

.status-message {
    margin-top: 10px;
    font-size: 13px;
    color: var(--color-accent);
    min-height: 20px;
    text-align: center;
}

.diff-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
    max-height: 60vh;
    overflow: hidden;
}

.diff-pane {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.diff-pane h3 {
    color: var(--color-accent);
    font-size: 14px;
    text-transform: lowercase;
}

.diff-pane pre {
    flex: 1;
    background-color: rgba(0,0,0,0.2);
    border: 1px solid var(--color-border);
    padding: 10px;
    overflow: auto;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-fg);
    white-space: pre-wrap;
}

.conflict-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
}

@media (max-width: 768px) {
    .diff-container {
        grid-template-columns: 1fr;
        max-height: none;
    }
}