/* ========================================
   Todo Pro - Professional Todo App
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: #16161e;
    --bg-hover: #1e1e28;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    --border-color: #2a2a3a;
    --border-light: #3a3a4a;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Font */
    --font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Safe Areas */
    --safe-area-top: env(safe-area-inset-top);
    --safe-area-bottom: env(safe-area-inset-bottom);
}

/* English Mode */
[lang="en"] {
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: white;
}

/* ========================================
   Splash Screen
   ======================================== */
.splash-screen {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.splash-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.splash-content {
    text-align: center;
}

.splash-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-lg);
    animation: pulse 2s infinite;
}

.logo-svg {
    width: 100%;
    height: 100%;
}

.logo-svg.small {
    width: 60px;
    height: 60px;
}

.splash-title {
    font-size: 2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-lg);
}

.splash-loader {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 1s linear infinite;
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

/* ========================================
   Auth Screen
   ======================================== */
.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
}

.auth-screen.hidden {
    display: none;
}

.auth-container {
    width: 100%;
    max-width: 400px;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.auth-header p {
    color: var(--text-secondary);
}

/* Language Selector */
.lang-selector {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.lang-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background: var(--bg-hover);
}

.lang-btn.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
}

/* Auth Forms */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.auth-form.hidden {
    display: none;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Checkbox */
.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-sm);
    position: relative;
    transition: all var(--transition-fast);
}

.checkbox-label input:checked + .checkmark {
    background: var(--accent-gradient);
    border-color: transparent;
}

.checkbox-label input:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Toggle Switch */
.toggle {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-gradient);
    border-color: transparent;
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(24px);
    background: white;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.4);
}

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

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

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

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

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Auth Switch */
.auth-switch {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.auth-switch span {
    color: var(--accent-primary);
    cursor: pointer;
    font-size: 0.875rem;
}

.auth-switch span:hover {
    text-decoration: underline;
}

.auth-switch span.hidden {
    display: none;
}

/* ========================================
   Main App
   ======================================== */
.main-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-bottom: 80px;
}

.main-app.hidden {
    display: none;
}

/* App Header */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + var(--safe-area-top));
}

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

.datetime-display {
    text-align: right;
}

[dir="ltr"] .datetime-display {
    text-align: left;
}

.datetime-display .time {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

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

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

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

.notif-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    background: var(--danger);
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.notif-badge.hidden {
    display: none;
}

.header-calendar-link {
    margin-top: var(--spacing-md);
}

.calendar-link-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    font-size: 0.875rem;
}

.calendar-link-btn svg {
    width: 18px;
    height: 18px;
}

.calendar-link-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

/* App Content */
.app-content {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

/* ========================================
   Planners View
   ======================================== */
.planners-view {
    animation: fadeIn var(--transition-normal);
}

.planners-view.hidden {
    display: none;
}

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

.planners-header {
    margin-bottom: var(--spacing-lg);
}

.planners-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.planners-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Planner Card */
.planner-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.planner-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.planner-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--planner-color, var(--accent-gradient));
}

.planner-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.planner-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
}

.planner-info {
    flex: 1;
}

.planner-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.planner-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.planner-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Progress Bar */
.progress-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

/* ========================================
   Planner Detail View
   ======================================== */
.planner-detail-view {
    animation: fadeIn var(--transition-normal);
}

.planner-detail-view.hidden {
    display: none;
}

.planner-detail-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.back-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    background: var(--bg-hover);
}

.back-btn svg {
    width: 20px;
    height: 20px;
}

.planner-detail-title {
    flex: 1;
}

.planner-detail-title h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.planner-detail-title span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Columns Layout (Kanban) */
.columns-container {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    padding-bottom: var(--spacing-md);
    -webkit-overflow-scrolling: touch;
}

.column {
    flex: 0 0 280px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 300px);
}

@media (max-width: 768px) {
    .columns-container {
        flex-direction: column;
    }
    
    .column {
        flex: none;
        width: 100%;
        max-height: none;
    }
}

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

.column-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.column-count {
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.column-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.column-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.column-btn svg {
    width: 16px;
    height: 16px;
}

.column-body {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Task Card */
.task-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.task-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(-4px);
}

[dir="ltr"] .task-card:hover {
    transform: translateX(4px);
}

.task-card.completed {
    opacity: 0.6;
}

.task-card.completed .task-title {
    text-decoration: line-through;
}

.task-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.task-checkbox {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.task-checkbox input {
    display: none;
}

.task-checkbox .checkmark {
    width: 20px;
    height: 20px;
}

.task-content {
    flex: 1;
    min-width: 0;
}

.task-title {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    word-wrap: break-word;
}

.task-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.task-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.task-meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.task-meta-item svg {
    width: 12px;
    height: 12px;
}

.task-actions {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.task-card:hover .task-actions {
    opacity: 1;
}

.task-action-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.task-action-btn.danger:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.task-action-btn svg {
    width: 14px;
    height: 14px;
}

/* Single Column Layout (Lists) */
.single-column {
    max-width: 600px;
}

.tasks-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Add Task Inline */
.add-task-inline {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.add-task-inline input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
}

.add-task-inline input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.add-task-inline button {
    padding: var(--spacing-sm) var(--spacing-md);
}

/* ========================================
   Specific Planner Styles
   ======================================== */

/* Eisenhower Matrix */
.eisenhower-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

@media (max-width: 600px) {
    .eisenhower-grid {
        grid-template-columns: 1fr;
    }
}

.eisenhower-quadrant {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    min-height: 200px;
}

.eisenhower-quadrant.urgent-important {
    border-top: 3px solid var(--danger);
}

.eisenhower-quadrant.not-urgent-important {
    border-top: 3px solid var(--info);
}

.eisenhower-quadrant.urgent-not-important {
    border-top: 3px solid var(--warning);
}

.eisenhower-quadrant.not-urgent-not-important {
    border-top: 3px solid var(--text-muted);
}

.quadrant-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.quadrant-title {
    font-weight: 600;
    font-size: 0.875rem;
}

.quadrant-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

/* Time Blocking */
.time-blocks {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.time-block {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.time-block:hover {
    border-color: var(--accent-primary);
}

.time-block-time {
    flex: 0 0 80px;
    font-weight: 600;
    color: var(--accent-primary);
    font-variant-numeric: tabular-nums;
}

.time-block-content {
    flex: 1;
}

.time-block-empty {
    color: var(--text-muted);
    font-style: italic;
}

/* Gamified */
.gamified-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.xp-display {
    text-align: center;
}

.xp-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.level-display {
    text-align: center;
}

.level-badge {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin: 0 auto var(--spacing-xs);
}

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

.streak-display {
    text-align: center;
}

.streak-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--warning);
}

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

/* ========================================
   Monthly Calendar
   ======================================== */
.monthly-calendar-view {
    animation: fadeIn var(--transition-normal);
}

.monthly-calendar-view.hidden {
    display: none;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.calendar-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.nav-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.nav-btn svg {
    width: 20px;
    height: 20px;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.weekday {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: var(--spacing-sm);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--spacing-xs);
}

.calendar-day {
    aspect-ratio: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.calendar-day:hover {
    border-color: var(--accent-primary);
}

.calendar-day.today {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.calendar-day.other-month {
    opacity: 0.4;
}

.day-number {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.day-tasks {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow: hidden;
}

.day-task-mini {
    font-size: 0.625rem;
    padding: 2px 4px;
    background: var(--accent-primary);
    border-radius: 2px;
    color: white;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.day-tasks-more {
    font-size: 0.625rem;
    color: var(--text-muted);
    cursor: pointer;
}

/* ========================================
   Charts View
   ======================================== */
.charts-view {
    animation: fadeIn var(--transition-normal);
}

.charts-view.hidden {
    display: none;
}

.charts-header {
    margin-bottom: var(--spacing-lg);
}

.charts-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.period-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.period-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.period-btn:hover {
    background: var(--bg-hover);
}

.period-btn.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
}

.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.chart-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.chart-card canvas {
    max-height: 250px;
}

/* ========================================
   Settings View
   ======================================== */
.settings-view {
    animation: fadeIn var(--transition-normal);
}

.settings-view.hidden {
    display: none;
}

.settings-header {
    margin-bottom: var(--spacing-lg);
}

.settings-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.settings-group {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.settings-group h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.setting-item span {
    color: var(--text-secondary);
}

.setting-item select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
}

.planners-toggle-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.planner-toggle-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.planner-toggle-item span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.connections-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.connection-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.connection-info {
    display: flex;
    flex-direction: column;
}

.connection-name {
    font-weight: 500;
}

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

.user-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.user-info #userName {
    font-weight: 600;
}

.user-info #userEmail {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ========================================
   FAB Button
   ======================================== */
.fab {
    position: fixed;
    bottom: calc(100px + var(--safe-area-bottom));
    left: var(--spacing-lg);
    width: 56px;
    height: 56px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transition: all var(--transition-fast);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
}

[dir="ltr"] .fab {
    left: auto;
    right: var(--spacing-lg);
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 40px rgba(99, 102, 241, 0.5);
}

.fab svg {
    width: 24px;
    height: 24px;
}

.fab.hidden {
    display: none;
}

/* ========================================
   Bottom Navigation
   ======================================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-sm);
    padding-bottom: calc(var(--spacing-sm) + var(--safe-area-bottom));
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    font-size: 0.75rem;
}

.nav-item svg {
    width: 24px;
    height: 24px;
}

.nav-item:hover {
    color: var(--text-secondary);
}

.nav-item.active {
    color: var(--accent-primary);
}

/* ========================================
   Side Menu
   ======================================== */
.side-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.side-menu-overlay:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.side-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    max-width: 80vw;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    z-index: 201;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

[dir="ltr"] .side-menu {
    right: auto;
    left: 0;
    border-left: none;
    border-right: 1px solid var(--border-color);
    transform: translateX(-100%);
}

.side-menu:not(.hidden) {
    transform: translateX(0);
}

.side-menu-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-top: calc(var(--spacing-lg) + var(--safe-area-top));
    border-bottom: 1px solid var(--border-color);
}

.user-avatar {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    display: block;
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-muted);
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.close-menu-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}

.close-menu-btn svg {
    width: 20px;
    height: 20px;
}

.side-menu-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.menu-item svg {
    width: 20px;
    height: 20px;
}

.menu-item.danger {
    color: var(--danger);
}

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

.menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-md) 0;
}

/* ========================================
   Modals
   ======================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn var(--transition-normal);
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.modal-close svg {
    width: 18px;
    height: 18px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Planner Selector */
.planner-selector {
    max-width: 600px;
}

.planner-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    max-height: 60vh;
    overflow-y: auto;
}

.planner-type-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.planner-type-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.planner-type-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.planner-type-name {
    font-weight: 500;
    font-size: 0.875rem;
}

.planner-type-card.custom {
    border-style: dashed;
}

/* Custom Planner Modal */
.custom-planner {
    max-width: 500px;
}

.icon-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.icon-option {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.icon-option:hover,
.icon-option.selected {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.2);
}

.color-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.color-option {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all var(--transition-fast);
}

.color-option:hover,
.color-option.selected {
    border-color: white;
    transform: scale(1.1);
}

.columns-editor {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.column-item {
    display: flex;
    gap: var(--spacing-sm);
}

.column-name-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
}

.remove-column-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--danger);
    cursor: pointer;
    font-size: 1.25rem;
}

/* Search Result */
.search-result {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

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

.search-result-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-result-avatar {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
}

.search-result-info {
    flex: 1;
}

.search-result-name {
    font-weight: 500;
}

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

/* ========================================
   Notifications Panel
   ======================================== */
.notifications-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    max-width: 90vw;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    z-index: 250;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

[dir="ltr"] .notifications-panel {
    right: auto;
    left: 0;
    border-left: none;
    border-right: 1px solid var(--border-color);
    transform: translateX(-100%);
}

.notifications-panel:not(.hidden) {
    transform: translateX(0);
}

.notif-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    padding-top: calc(var(--spacing-lg) + var(--safe-area-top));
    border-bottom: 1px solid var(--border-color);
}

.notif-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.close-notif-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}

.close-notif-btn svg {
    width: 20px;
    height: 20px;
}

.notif-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.notif-item {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.notif-item.unread {
    border-left: 3px solid var(--accent-primary);
}

[dir="ltr"] .notif-item.unread {
    border-left: none;
    border-right: 3px solid var(--accent-primary);
}

.notif-title {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.notif-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.notif-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.notif-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

/* ========================================
   Day Tasks Popup
   ======================================== */
.day-tasks-popup {
    position: fixed;
    bottom: calc(100px + var(--safe-area-bottom));
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 400px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    z-index: 150;
    box-shadow: var(--shadow-lg);
    animation: slideUp var(--transition-normal);
}

.day-tasks-popup.hidden {
    display: none;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.popup-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.close-popup-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}

.close-popup-btn svg {
    width: 18px;
    height: 18px;
}

.popup-tasks {
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: var(--spacing-md);
}

.popup-task-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.popup-task-time {
    color: var(--accent-primary);
    font-weight: 500;
    flex-shrink: 0;
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    bottom: calc(100px + var(--safe-area-bottom));
    left: 50%;
    transform: translateX(-50%);
    z-index: 400;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    animation: toastIn var(--transition-normal);
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast.success {
    border-color: var(--success);
}

.toast.error {
    border-color: var(--danger);
}

.toast.warning {
    border-color: var(--warning);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-20px);
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 480px) {
    .auth-container {
        padding: var(--spacing-lg);
    }
    
    .planner-stats {
        flex-wrap: wrap;
    }
    
    .charts-container {
        grid-template-columns: 1fr;
    }
    
    .period-selector {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: var(--spacing-sm);
    }
    
    .period-btn {
        flex-shrink: 0;
    }
}

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

@media (min-width: 1024px) {
    .planners-list {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .fab {
        bottom: var(--spacing-xl);
        left: var(--spacing-xl);
    }
    
    [dir="ltr"] .fab {
        left: auto;
        right: var(--spacing-xl);
    }
}

/* Print Styles */
@media print {
    .app-header,
    .bottom-nav,
    .fab,
    .side-menu,
    .modal {
        display: none !important;
    }
    
    .main-app {
        padding-bottom: 0;
    }
    
    body {
        background: white;
        color: black;
    }
}