/* LifeFlow - Minimalist GTD Task Planner Styles */

/* Import Inter Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Variables for Theming */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e5e5e5;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    --border: #e5e7eb;
    --border-hover: #d1d5db;
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius: 0.75rem;
    --radius-sm: 0.5rem;
    --radius-lg: 1rem;
    
    --spacing: 1.5rem;
    --spacing-sm: 1rem;
    --spacing-xs: 0.5rem;
    
    --transition: 200ms ease;
    /* iOS safe area fallbacks */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    
    --border: #374151;
    --border-hover: #4b5563;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* App Layout */
.app {
    display: flex;
    /* Prefer dynamic viewport height to avoid iOS 100vh issues */
    min-height: 100dvh;
    position: relative;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-header {
    padding: var(--spacing);
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-sm);
    overflow-y: auto;
}

.nav-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem var(--spacing-sm);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-align: left;
    margin-bottom: 0.25rem;
}

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

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

.nav-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.nav-label {
    flex: 1;
}

.nav-count {
    font-size: 0.8125rem;
    padding: 0.125rem 0.5rem;
    background-color: var(--bg-tertiary);
    border-radius: 1rem;
    min-width: 1.5rem;
    text-align: center;
}

.nav-item.active .nav-count {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.sidebar-footer {
    padding: var(--spacing-sm);
    border-top: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-xs);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: var(--spacing);
    /* Space for mobile nav + iOS home indicator */
    padding-bottom: calc(var(--spacing) + 70px + var(--safe-bottom));
    max-width: 1200px;
    width: 100%;
}

/* Quick Add Bar */
.quick-add-bar {
    position: sticky;
    top: 0;
    background-color: var(--bg-secondary);
    padding: var(--spacing) 0;
    z-index: 50;
    margin: calc(-1 * var(--spacing)) calc(-1 * var(--spacing)) var(--spacing);
    padding-left: var(--spacing);
    padding-right: var(--spacing);
}

.quick-add-container {
    display: flex;
    gap: var(--spacing-xs);
    background-color: var(--bg-primary);
    padding: var(--spacing-xs);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.quick-add-input {
    flex: 1;
    border: none;
    background: none;
    font-size: 1rem;
    padding: 0.5rem var(--spacing-sm);
    color: var(--text-primary);
    outline: none;
}

.quick-add-input::placeholder {
    color: var(--text-tertiary);
}

.voice-btn,
.quick-add-btn {
    border: none;
    background-color: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition);
}

.voice-btn {
    font-size: 1.25rem;
    padding: 0.5rem 0.75rem;
}

.quick-add-btn:hover,
.voice-btn:hover {
    background-color: var(--primary-dark);
}

.voice-btn.listening {
    background-color: var(--danger);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Search Bar */
.search-bar {
    margin-bottom: var(--spacing);
}

.search-input {
    width: 100%;
    padding: 0.75rem var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: border-color var(--transition);
}

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

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

/* View Header */
.view-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing);
}

.view-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

/* Task List */
.task-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.task-item {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.task-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.task-item.done {
    opacity: 0.6;
}

.task-checkbox {
    margin-top: 0.125rem;
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    flex-shrink: 0;
}

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

.task-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    word-wrap: break-word;
}

.task-item.done .task-title {
    text-decoration: line-through;
    color: var(--text-tertiary);
}

.task-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.task-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
}

.task-due,
.task-project {
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

.task-due.overdue {
    background-color: var(--danger);
    color: white;
}

.task-due.today {
    background-color: var(--warning);
    color: white;
}

.task-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.task-tag {
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    background-color: var(--primary);
    color: white;
    font-size: 0.75rem;
}

.task-actions {
    display: flex;
    gap: 0.25rem;
    opacity: 0;
    transition: opacity var(--transition);
}

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

/* Kanban Board */
.kanban-view {
    overflow-x: auto;
    margin: calc(-1 * var(--spacing));
    padding: var(--spacing);
}

.kanban-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing);
    min-width: 900px;
}

.kanban-column {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
}

.kanban-column-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.kanban-column-content {
    min-height: 200px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.kanban-column-content.drag-over {
    background-color: var(--bg-secondary);
    border: 2px dashed var(--primary);
    border-radius: var(--radius-sm);
}

.task-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    cursor: move;
    transition: all var(--transition);
}

.task-card:hover {
    box-shadow: var(--shadow);
}

.task-card.dragging {
    opacity: 0.5;
}

/* Projects View */
.projects-header {
    margin-bottom: var(--spacing);
}

.projects-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing);
}

.project-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    padding: var(--spacing);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition);
    border-left: 4px solid var(--primary);
}

.project-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.project-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-actions {
    display: flex;
    gap: 0.25rem;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing) * 2;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing);
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.empty-state-text {
    font-size: 0.9375rem;
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

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

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

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

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

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.icon-btn {
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    transition: all var(--transition);
}

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

/* Forms */
.form-group {
    margin-bottom: var(--spacing);
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.625rem var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: border-color var(--transition);
}

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

.form-input-color {
    width: 100%;
    height: 3rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: 0.9375rem;
}

.radio-group {
    display: flex;
    gap: var(--spacing);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9375rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    margin-top: var(--spacing);
    padding-top: var(--spacing);
    border-top: 1px solid var(--border);
}

/* Tags & Subtasks */
.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary);
    color: white;
    border-radius: 1rem;
    font-size: 0.875rem;
}

.tag-remove {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    padding: 0;
    margin-left: 0.25rem;
}

.subtasks-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: var(--spacing-sm);
}

.subtask-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.subtask-checkbox {
    flex-shrink: 0;
}

.subtask-text {
    flex: 1;
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.subtask-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.125rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing);
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.modal-content {
    position: relative;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

.modal-small {
    max-width: 400px;
}

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

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition);
}

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

.modal-body {
    padding: var(--spacing);
}

/* Shortcuts List */
.shortcuts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: var(--spacing);
}

kbd {
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    min-width: 2rem;
    text-align: center;
}

/* Export Buttons */
.export-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: calc(var(--spacing) + 70px + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: var(--bg-primary);
    padding: var(--spacing-sm) var(--spacing);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    animation: toastSlideIn 0.3s ease;
}

.toast.hidden {
    display: none;
}

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

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 0.5rem;
    padding-bottom: calc(0.5rem + var(--safe-bottom));
    z-index: 100;
}

.mobile-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    transition: color var(--transition);
}

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

.mobile-nav-icon {
    font-size: 1.4rem;
}

.mobile-add-icon {
    background-color: var(--primary);
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 300;
}

.mobile-nav-label {
    font-size: 0.75rem;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .main-content {
        margin-left: 0;
        padding-bottom: calc(var(--spacing) + 70px + var(--safe-bottom));
    }
    
    .mobile-nav {
        display: flex;
    }
    
    .kanban-board {
        min-width: 600px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .projects-list {
        grid-template-columns: 1fr;
    }
    
    .view-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing: 1rem;
        --spacing-sm: 0.75rem;
    }
    
    .quick-add-bar {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
    
    .main-content {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        border-radius: var(--radius);
    }
}

/* Additional mobile tweaks for portrait small screens */
@media (max-width: 420px) and (orientation: portrait) {
    .mobile-nav-item {
        padding: 0.4rem;
    }

    /* Hide labels to save horizontal space on very small devices */
    .mobile-nav-label {
        display: none;
    }

    .mobile-nav-icon {
        font-size: 1.25rem;
    }

    .mobile-add-icon {
        width: 2.6rem;
        height: 2.6rem;
        font-size: 1.6rem;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .mobile-nav,
    .quick-add-bar,
    .search-bar,
    .view-actions,
    .task-actions,
    .modal {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .task-item {
        break-inside: avoid;
    }
}