/* GTD Todos System - Enhanced UI/UX with Full Page Layout */

/* ====== CSS Custom Properties ====== */
:root {
    /* Colors - Dark Theme Enhanced */
    --gtd-bg-primary: #0a0a0a;
    --gtd-bg-secondary: #111111;
    --gtd-bg-tertiary: #1a1a1a;
    --gtd-bg-card: #1e1e1e;
    --gtd-bg-modal: #222222;
    --gtd-bg-input: #2a2a2a;
    --gtd-bg-hover: #333333;
    --gtd-bg-button: #2d2d2d;
    --gtd-bg-button-hover: #3a3a3a;
    --gtd-bg-accent: #2563eb;
    --gtd-bg-accent-hover: #1d4ed8;
    
    /* Text Colors */
    --gtd-text-primary: #ffffff;
    --gtd-text-secondary: #d1d5db;
    --gtd-text-muted: #9ca3af;
    --gtd-text-accent: #60a5fa;
    --gtd-text-success: #34d399;
    --gtd-text-warning: #fbbf24;
    --gtd-text-error: #f87171;
    
    /* Borders */
    --gtd-border-primary: #374151;
    --gtd-border-secondary: #4b5563;
    --gtd-border-accent: #2563eb;
    --gtd-border-success: #10b981;
    --gtd-border-warning: #f59e0b;
    --gtd-border-error: #ef4444;
    
    /* Shadows */
    --gtd-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --gtd-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --gtd-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --gtd-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --gtd-shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.3);
    
    /* Spacing */
    --gtd-space-xs: 0.25rem;
    --gtd-space-sm: 0.5rem;
    --gtd-space-md: 1rem;
    --gtd-space-lg: 1.5rem;
    --gtd-space-xl: 2rem;
    --gtd-space-2xl: 3rem;
    --gtd-space-3xl: 4rem;
    
    /* Border Radius */
    --gtd-radius-sm: 0.375rem;
    --gtd-radius-md: 0.5rem;
    --gtd-radius-lg: 0.75rem;
    --gtd-radius-xl: 1rem;
    --gtd-radius-full: 9999px;
    
    /* Typography - Enhanced sizes */
    --gtd-text-xs: 0.75rem;     /* 12px */
    --gtd-text-sm: 0.875rem;    /* 14px */
    --gtd-text-base: 1rem;      /* 16px */
    --gtd-text-lg: 1.125rem;    /* 18px */
    --gtd-text-xl: 1.25rem;     /* 20px */
    --gtd-text-2xl: 1.5rem;     /* 24px */
    --gtd-text-3xl: 1.875rem;   /* 30px */
    --gtd-text-4xl: 2.25rem;    /* 36px */
    
    /* Line Heights */
    --gtd-leading-tight: 1.25;
    --gtd-leading-normal: 1.5;
    --gtd-leading-relaxed: 1.75;
    
    /* Transitions */
    --gtd-transition-fast: 150ms ease-in-out;
    --gtd-transition-normal: 250ms ease-in-out;
    --gtd-transition-slow: 350ms ease-in-out;
    
    /* Z-Index */
    --gtd-z-modal: 1000;
    --gtd-z-notification: 1100;
    --gtd-z-tooltip: 1200;
}

/* ====== Base Styles ====== */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: var(--gtd-text-base);
    line-height: var(--gtd-leading-normal);
    color: var(--gtd-text-primary);
    background-color: var(--gtd-bg-primary);
    margin: 0;
    padding: 0;
}

/* ====== Full Page Layout ====== */
.gtd-fullpage {
    min-height: 100vh;
    width: 100%;
    background: linear-gradient(135deg, var(--gtd-bg-primary) 0%, var(--gtd-bg-secondary) 100%);
    padding: 0;
    margin: 0;
}

/* Hide WordPress post title completely */
.single-todos .entry-title,
.single-todos h1.entry-title,
.page .entry-title,
.page h1.entry-title {
    display: none !important;
}

/* ====== Main Container ====== */
.gtd-todos-wrapper {
    max-width: 100%;
    margin: 0 auto;
    padding: var(--gtd-space-lg);
    min-height: 100vh;
}

/* ====== Header Section ====== */
.gtd-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--gtd-space-2xl);
    padding-bottom: var(--gtd-space-lg);
    border-bottom: 2px solid var(--gtd-border-primary);
}

.gtd-header-left h1.gtd-main-title {
    font-size: var(--gtd-text-4xl);
    font-weight: 800;
    margin: 0 0 var(--gtd-space-sm) 0;
    background: linear-gradient(135deg, var(--gtd-text-accent), var(--gtd-text-success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gtd-subtitle {
    font-size: var(--gtd-text-lg);
    color: var(--gtd-text-secondary);
    margin: 0;
    font-weight: 400;
}

/* ====== Statistics Section ====== */
.gtd-stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--gtd-space-lg);
    margin-bottom: var(--gtd-space-2xl);
    padding: var(--gtd-space-xl);
    background: var(--gtd-bg-card);
    border-radius: var(--gtd-radius-lg);
    border: 1px solid var(--gtd-border-primary);
    box-shadow: var(--gtd-shadow-md);
}

.gtd-stat-item {
    text-align: center;
    padding: var(--gtd-space-lg);
    background: var(--gtd-bg-secondary);
    border-radius: var(--gtd-radius-md);
    border: 1px solid var(--gtd-border-secondary);
    transition: var(--gtd-transition-normal);
    position: relative;
    overflow: hidden;
}

.gtd-stat-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--gtd-shadow-lg);
    border-color: var(--gtd-border-accent);
}

.gtd-stat-number {
    display: block;
    font-size: var(--gtd-text-3xl);
    font-weight: 700;
    color: var(--gtd-text-accent);
    margin-bottom: var(--gtd-space-xs);
    transition: var(--gtd-transition-normal);
}

.gtd-stat-label {
    font-size: var(--gtd-text-lg);
    color: var(--gtd-text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gtd-counter-updating .gtd-stat-number {
    transform: scale(1.1);
    color: var(--gtd-text-success);
}

/* ====== Mind Dump Section ====== */
.gtd-mind-dump-section {
    background: var(--gtd-bg-card);
    padding: var(--gtd-space-2xl);
    border-radius: var(--gtd-radius-lg);
    margin-bottom: var(--gtd-space-2xl);
    border: 2px solid var(--gtd-border-primary);
    transition: var(--gtd-transition-normal);
    box-shadow: var(--gtd-shadow-md);
}

.gtd-mind-dump-section.gtd-focused {
    border-color: var(--gtd-border-accent);
    box-shadow: var(--gtd-shadow-lg), 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.gtd-mind-dump-section h2 {
    font-size: var(--gtd-text-2xl);
    margin: 0 0 var(--gtd-space-lg) 0;
    color: var(--gtd-text-primary);
    font-weight: 600;
}

#gtd-mind-dump {
    width: 100%;
    min-height: 120px;
    max-height: 200px;
    padding: var(--gtd-space-lg);
    font-size: var(--gtd-text-lg);
    line-height: var(--gtd-leading-relaxed);
    background: var(--gtd-bg-input);
    border: 2px solid var(--gtd-border-secondary);
    border-radius: var(--gtd-radius-md);
    color: var(--gtd-text-primary);
    resize: vertical;
    transition: var(--gtd-transition-normal);
    font-family: inherit;
}

#gtd-mind-dump:focus {
    outline: none;
    border-color: var(--gtd-border-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

#gtd-mind-dump::placeholder {
    color: var(--gtd-text-muted);
    font-style: italic;
}

.gtd-quick-actions {
    display: flex;
    gap: var(--gtd-space-lg);
    margin-top: var(--gtd-space-lg);
    align-items: center;
    flex-wrap: wrap;
}

.gtd-quick-category {
    display: flex;
    gap: var(--gtd-space-sm);
    align-items: center;
}

/* ====== Filter Section ====== */
.gtd-filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--gtd-space-lg);
    margin-bottom: var(--gtd-space-xl);
    padding: var(--gtd-space-lg);
    background: var(--gtd-bg-card);
    border-radius: var(--gtd-radius-md);
    border: 1px solid var(--gtd-border-primary);
    flex-wrap: wrap;
}

.gtd-filter-group {
    display: flex;
    gap: var(--gtd-space-md);
    flex-wrap: wrap;
    flex: 1;
}

.gtd-view-toggle {
    display: flex;
    gap: var(--gtd-space-xs);
}

/* ====== Form Elements ====== */
.gtd-select {
    min-width: 150px;
    padding: var(--gtd-space-md);
    font-size: var(--gtd-text-base);
    background: var(--gtd-bg-input);
    border: 1px solid var(--gtd-border-secondary);
    border-radius: var(--gtd-radius-md);
    color: var(--gtd-text-primary);
    transition: var(--gtd-transition-fast);
}

.gtd-select:focus {
    outline: none;
    border-color: var(--gtd-border-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.gtd-input-group {
    display: flex;
    gap: var(--gtd-space-sm);
    align-items: center;
}

/* ====== Button System ====== */
.gtd-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gtd-space-sm);
    padding: var(--gtd-space-md) var(--gtd-space-lg);
    font-size: var(--gtd-text-base);
    font-weight: 600;
    line-height: 1;
    border: none;
    border-radius: var(--gtd-radius-md);
    cursor: pointer;
    transition: var(--gtd-transition-fast);
    text-decoration: none;
    white-space: nowrap;
    min-height: 44px; /* Touch-friendly minimum */
    font-family: inherit;
}

.gtd-btn-primary {
    background: var(--gtd-bg-accent);
    color: white;
    box-shadow: var(--gtd-shadow-sm);
}

.gtd-btn-primary:hover {
    background: var(--gtd-bg-accent-hover);
    box-shadow: var(--gtd-shadow-md);
    transform: translateY(-1px);
}

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

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

.gtd-btn-secondary.active {
    background: var(--gtd-bg-accent);
    color: white;
    border-color: var(--gtd-bg-accent);
}

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

.gtd-btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.gtd-btn-small {
    padding: var(--gtd-space-sm) var(--gtd-space-md);
    font-size: var(--gtd-text-sm);
    min-height: 36px;
}

.gtd-btn-icon {
    font-size: 1.1em;
}

.gtd-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ====== Todos List ====== */
.gtd-todos-list {
    display: flex;
    flex-direction: column;
    gap: var(--gtd-space-lg);
    min-height: 300px;
}

.gtd-todos-list.gtd-view-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--gtd-space-lg);
}

/* ====== Todo Items ====== */
.gtd-todo-item {
    display: flex;
    gap: var(--gtd-space-lg);
    padding: var(--gtd-space-xl);
    background: var(--gtd-bg-card);
    border: 1px solid var(--gtd-border-primary);
    border-radius: var(--gtd-radius-lg);
    transition: var(--gtd-transition-normal);
    cursor: pointer;
    position: relative;
    box-shadow: var(--gtd-shadow-sm);
}

.gtd-todo-item:hover {
    border-color: var(--gtd-border-accent);
    box-shadow: var(--gtd-shadow-md);
    transform: translateY(-2px);
}

.gtd-todo-item.gtd-completed {
    opacity: 0.7;
    background: var(--gtd-bg-secondary);
}

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

.gtd-todo-checkbox {
    display: flex;
    align-items: flex-start;
    padding-top: var(--gtd-space-xs);
}

.gtd-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--gtd-bg-accent);
}

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

.gtd-todo-text {
    font-size: var(--gtd-text-lg);
    line-height: var(--gtd-leading-relaxed);
    color: var(--gtd-text-primary);
    margin-bottom: var(--gtd-space-md);
    word-wrap: break-word;
    font-weight: 400;
}

.gtd-todo-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--gtd-space-md);
    flex-wrap: wrap;
}

.gtd-todo-meta-left,
.gtd-todo-meta-right {
    display: flex;
    gap: var(--gtd-space-md);
    align-items: center;
}

.gtd-todo-status {
    font-size: var(--gtd-text-base);
    font-weight: 600;
    padding: var(--gtd-space-xs) var(--gtd-space-sm);
    border-radius: var(--gtd-radius-sm);
    border: 1px solid;
}

.gtd-status-pending {
    color: var(--gtd-text-warning);
    background: rgba(251, 191, 36, 0.1);
    border-color: var(--gtd-border-warning);
}

.gtd-status-in-progress {
    color: var(--gtd-text-accent);
    background: rgba(96, 165, 250, 0.1);
    border-color: var(--gtd-border-accent);
}

.gtd-status-completed {
    color: var(--gtd-text-success);
    background: rgba(52, 211, 153, 0.1);
    border-color: var(--gtd-border-success);
}

.gtd-status-cancelled {
    color: var(--gtd-text-error);
    background: rgba(248, 113, 113, 0.1);
    border-color: var(--gtd-border-error);
}

.gtd-todo-category {
    font-size: var(--gtd-text-sm);
    color: var(--gtd-text-accent);
    background: rgba(96, 165, 250, 0.1);
    padding: var(--gtd-space-xs) var(--gtd-space-sm);
    border-radius: var(--gtd-radius-sm);
    border: 1px solid var(--gtd-border-accent);
}

.gtd-todo-time {
    font-size: var(--gtd-text-sm);
    color: var(--gtd-text-muted);
}

.gtd-todo-tags {
    display: flex;
    gap: var(--gtd-space-xs);
    flex-wrap: wrap;
}

.gtd-tag {
    font-size: var(--gtd-text-xs);
    background: var(--gtd-bg-tertiary);
    color: var(--gtd-text-secondary);
    padding: var(--gtd-space-xs) var(--gtd-space-sm);
    border-radius: var(--gtd-radius-full);
    border: 1px solid var(--gtd-border-secondary);
}

/* ====== Empty State ====== */
.gtd-empty-state {
    text-align: center;
    padding: var(--gtd-space-3xl) var(--gtd-space-lg);
    color: var(--gtd-text-muted);
}

.gtd-empty-icon {
    font-size: 4rem;
    margin-bottom: var(--gtd-space-lg);
    opacity: 0.5;
}

.gtd-empty-state h3 {
    font-size: var(--gtd-text-2xl);
    margin: 0 0 var(--gtd-space-md) 0;
    color: var(--gtd-text-secondary);
}

.gtd-empty-state p {
    font-size: var(--gtd-text-lg);
    max-width: 400px;
    margin: 0 auto;
    line-height: var(--gtd-leading-relaxed);
}

/* ====== Modal System ====== */
.gtd-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: var(--gtd-z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--gtd-transition-normal);
    padding: var(--gtd-space-lg);
}

.gtd-modal.gtd-modal-active {
    opacity: 1;
    visibility: visible;
}

.gtd-modal-content {
    background: var(--gtd-bg-modal);
    border-radius: var(--gtd-radius-lg);
    box-shadow: var(--gtd-shadow-xl);
    border: 1px solid var(--gtd-border-primary);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: var(--gtd-transition-normal);
}

.gtd-modal.gtd-modal-active .gtd-modal-content {
    transform: scale(1) translateY(0);
}

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

.gtd-modal-large .gtd-modal-content {
    max-width: 900px;
}

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

.gtd-modal-header h3 {
    margin: 0;
    font-size: var(--gtd-text-xl);
    font-weight: 600;
    color: var(--gtd-text-primary);
}

.gtd-close {
    background: none;
    border: none;
    font-size: var(--gtd-text-2xl);
    color: var(--gtd-text-muted);
    cursor: pointer;
    padding: var(--gtd-space-sm);
    border-radius: var(--gtd-radius-sm);
    transition: var(--gtd-transition-fast);
    line-height: 1;
}

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

.gtd-modal-body {
    padding: var(--gtd-space-xl);
}

.gtd-modal-actions {
    display: flex;
    gap: var(--gtd-space-md);
    justify-content: flex-end;
    margin-top: var(--gtd-space-xl);
    flex-wrap: wrap;
}

/* ====== Tabs System ====== */
.gtd-tabs {
    display: flex;
    border-bottom: 2px solid var(--gtd-border-primary);
    margin-bottom: var(--gtd-space-xl);
    gap: var(--gtd-space-sm);
}

.gtd-tab-btn {
    background: none;
    border: none;
    padding: var(--gtd-space-lg) var(--gtd-space-xl);
    font-size: var(--gtd-text-lg);
    font-weight: 600;
    color: var(--gtd-text-muted);
    cursor: pointer;
    border-radius: var(--gtd-radius-md) var(--gtd-radius-md) 0 0;
    transition: var(--gtd-transition-fast);
    position: relative;
    font-family: inherit;
}

.gtd-tab-btn:hover {
    color: var(--gtd-text-secondary);
    background: var(--gtd-bg-hover);
}

.gtd-tab-btn.active {
    color: var(--gtd-text-accent);
    background: var(--gtd-bg-card);
}

.gtd-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gtd-bg-accent);
}

.gtd-tab-content {
    display: none;
}

.gtd-tab-content.active {
    display: block;
}

.gtd-tab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--gtd-space-xl);
}

/* ====== Items Management ====== */
.gtd-items-list {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--gtd-border-primary);
    border-radius: var(--gtd-radius-md);
    background: var(--gtd-bg-input);
}

.gtd-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gtd-space-lg);
    border-bottom: 1px solid var(--gtd-border-primary);
    transition: var(--gtd-transition-fast);
}

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

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

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

.gtd-item-name {
    font-size: var(--gtd-text-lg);
    font-weight: 500;
    color: var(--gtd-text-primary);
}

.gtd-item-actions {
    display: flex;
    gap: var(--gtd-space-sm);
}

.gtd-item-edit-form {
    display: flex;
    gap: var(--gtd-space-md);
    align-items: center;
    width: 100%;
}

.gtd-item-edit-input {
    flex: 1;
    padding: var(--gtd-space-sm) var(--gtd-space-md);
    font-size: var(--gtd-text-base);
    background: var(--gtd-bg-secondary);
    border: 1px solid var(--gtd-border-accent);
    border-radius: var(--gtd-radius-sm);
    color: var(--gtd-text-primary);
    font-family: inherit;
}

.gtd-item-edit-input:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.gtd-item-edit-actions {
    display: flex;
    gap: var(--gtd-space-xs);
}

.gtd-no-items,
.gtd-loading-text,
.gtd-error-text {
    text-align: center;
    padding: var(--gtd-space-2xl);
    color: var(--gtd-text-muted);
    font-size: var(--gtd-text-lg);
    font-style: italic;
}

.gtd-error-text {
    color: var(--gtd-text-error);
}

/* ====== Custom Modal Styles ====== */
.gtd-confirm-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--gtd-space-lg);
    margin-bottom: var(--gtd-space-xl);
}

.gtd-confirm-icon {
    font-size: var(--gtd-text-4xl);
    opacity: 0.8;
}

.gtd-confirm-message p {
    font-size: var(--gtd-text-lg);
    line-height: var(--gtd-leading-relaxed);
    margin: 0;
    color: var(--gtd-text-primary);
    max-width: 400px;
}

/* ====== Form Styles ====== */
.gtd-form-group {
    margin-bottom: var(--gtd-space-lg);
}

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

.gtd-form-group label {
    display: block;
    font-size: var(--gtd-text-base);
    font-weight: 600;
    color: var(--gtd-text-primary);
    margin-bottom: var(--gtd-space-sm);
}

.gtd-form-group input[type="text"],
.gtd-form-group textarea {
    width: 100%;
    padding: var(--gtd-space-md);
    font-size: var(--gtd-text-base);
    background: var(--gtd-bg-input);
    border: 1px solid var(--gtd-border-secondary);
    border-radius: var(--gtd-radius-md);
    color: var(--gtd-text-primary);
    transition: var(--gtd-transition-fast);
    font-family: inherit;
}

.gtd-form-group input[type="text"]:focus,
.gtd-form-group textarea:focus {
    outline: none;
    border-color: var(--gtd-border-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ====== Loading States ====== */
.gtd-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: var(--gtd-z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--gtd-transition-fast);
}

.gtd-loading.gtd-loading-active {
    opacity: 1;
    visibility: visible;
}

.gtd-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gtd-border-primary);
    border-top: 4px solid var(--gtd-bg-accent);
    border-radius: 50%;
    animation: gtd-spin 1s linear infinite;
}

@keyframes gtd-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.gtd-loading-cursor {
    cursor: wait !important;
}

.gtd-loading-cursor * {
    cursor: wait !important;
}

/* ====== Notifications ====== */
.gtd-notification {
    position: fixed;
    top: var(--gtd-space-lg);
    right: var(--gtd-space-lg);
    max-width: 400px;
    background: var(--gtd-bg-modal);
    border: 1px solid var(--gtd-border-primary);
    border-radius: var(--gtd-radius-lg);
    box-shadow: var(--gtd-shadow-xl);
    z-index: var(--gtd-z-notification);
    transform: translateX(100%);
    transition: var(--gtd-transition-normal);
    overflow: hidden;
}

.gtd-notification.gtd-notification-show {
    transform: translateX(0);
}

.gtd-notification-message {
    display: flex;
    align-items: center;
    gap: var(--gtd-space-md);
    padding: var(--gtd-space-lg);
    font-size: var(--gtd-text-base);
    font-weight: 500;
}

.gtd-notification-icon {
    font-size: var(--gtd-text-lg);
    flex-shrink: 0;
}

.gtd-notification-close {
    position: absolute;
    top: var(--gtd-space-sm);
    right: var(--gtd-space-sm);
    background: none;
    border: none;
    color: var(--gtd-text-muted);
    cursor: pointer;
    font-size: var(--gtd-text-lg);
    padding: var(--gtd-space-xs);
    border-radius: var(--gtd-radius-sm);
    transition: var(--gtd-transition-fast);
}

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

.gtd-notification-success {
    border-left: 4px solid var(--gtd-border-success);
}

.gtd-notification-error {
    border-left: 4px solid var(--gtd-border-error);
}

.gtd-notification-warning {
    border-left: 4px solid var(--gtd-border-warning);
}

.gtd-notification-info {
    border-left: 4px solid var(--gtd-border-accent);
}

/* ====== Animations ====== */
.gtd-todo-new {
    animation: gtd-gentle-bounce 0.6s ease-out;
}

@keyframes gtd-gentle-bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-4px);
    }
    60% {
        transform: translateY(-2px);
    }
}

.gtd-todo-updated {
    animation: gtd-pulse-update 1s ease-out;
}

@keyframes gtd-pulse-update {
    0% {
        transform: scale(1);
        box-shadow: var(--gtd-shadow-sm);
    }
    50% {
        transform: scale(1.02);
        box-shadow: var(--gtd-shadow-lg), 0 0 0 4px rgba(37, 99, 235, 0.2);
    }
    100% {
        transform: scale(1);
        box-shadow: var(--gtd-shadow-sm);
    }
}

.gtd-todo-deleting {
    animation: gtd-fade-out 0.3s ease-out forwards;
}

@keyframes gtd-fade-out {
    to {
        opacity: 0;
        transform: scale(0.95);
    }
}

.gtd-just-completed {
    animation: gtd-celebrate 2s ease-out;
}

@keyframes gtd-celebrate {
    0%, 100% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.05) rotate(1deg);
    }
    75% {
        transform: scale(1.05) rotate(-1deg);
    }
}

/* ====== Touch & Mobile Enhancements ====== */
.gtd-touch-device .gtd-todo-item {
    user-select: none;
    -webkit-user-select: none;
}

.gtd-swipe-right {
    transform: translateX(10px);
    background: rgba(52, 211, 153, 0.1);
    border-color: var(--gtd-border-success);
}

/* ====== Subtodos Styles ====== */

/* Progress Bar */
.gtd-subtodos-progress {
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-xs);
    background: var(--color-surface-secondary);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
}

.gtd-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-surface-tertiary);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.gtd-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-success), var(--color-primary));
    border-radius: var(--border-radius-full);
    transition: width 0.3s ease;
}

.gtd-progress-text {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Subtodos Controls */
.gtd-toggle-subtodos {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 2px 6px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.gtd-toggle-subtodos:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
}

.gtd-add-subtodo {
    padding: 2px 6px;
    background: var(--color-success);
    color: var(--color-white);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.gtd-add-subtodo:hover {
    background: var(--color-success-hover);
    transform: translateY(-1px);
}

.gtd-subtodos-icon, .gtd-subtodos-count {
    line-height: 1;
}

.gtd-btn-icon {
    font-size: 10px;
    line-height: 1;
}

/* Subtodos Container */
.gtd-subtodos-container {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-surface-tertiary);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
}

.gtd-subtodos-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

/* Subtodo Items */
.gtd-subtodo-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: all 0.2s ease;
}

.gtd-subtodo-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.gtd-subtodo-item.gtd-completed {
    opacity: 0.7;
    background: var(--color-surface-secondary);
}

.gtd-subtodo-item.gtd-completed .gtd-subtodo-text {
    text-decoration: line-through;
    color: var(--color-text-secondary);
}

/* Subtodo Checkbox */
.gtd-subtodo-checkbox {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.gtd-subtodo-checkbox-input {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* Subtodo Content */
.gtd-subtodo-content {
    flex: 1;
    min-width: 0;
}

.gtd-subtodo-text {
    font-size: 14px;
    line-height: 1.4;
    color: var(--color-text);
    word-wrap: break-word;
    margin-bottom: var(--spacing-xs);
}

.gtd-subtodo-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
}

.gtd-subtodo-time {
    font-size: 11px;
    color: var(--color-text-secondary);
}

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

.gtd-edit-subtodo, .gtd-delete-subtodo {
    padding: 2px 4px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.gtd-edit-subtodo {
    background: var(--color-warning);
    color: var(--color-white);
}

.gtd-edit-subtodo:hover {
    background: var(--color-warning-hover);
}

.gtd-delete-subtodo {
    background: var(--color-danger);
    color: var(--color-white);
}

.gtd-delete-subtodo:hover {
    background: var(--color-danger-hover);
}

/* Subtodo Edit Form */
.gtd-subtodo-edit-form {
    width: 100%;
}

.gtd-subtodo-edit-form .gtd-textarea {
    width: 100%;
    min-height: 60px;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 14px;
    line-height: 1.4;
    resize: vertical;
}

.gtd-subtodo-edit-form .gtd-form-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

/* Celebration Animation */
.gtd-celebration {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    transition: all 0.3s ease;
}

.gtd-celebration-animate {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.5);
    animation: celebrate 1s ease forwards;
}

@keyframes celebrate {
    0% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.5);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(2);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(2.5);
    }
}

/* Empty State for Subtodos */
.gtd-subtodos-container:empty::after {
    content: "No subtasks yet. Click the + button to add one.";
    display: block;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 14px;
    padding: var(--spacing-md);
    font-style: italic;
}

/* ====== Responsive Design ====== */
@media (max-width: 768px) {
    .gtd-todos-wrapper {
        padding: var(--gtd-space-md);
    }
    
    .gtd-header {
        flex-direction: column;
        gap: var(--gtd-space-lg);
        align-items: stretch;
    }
    
    .gtd-header-left h1.gtd-main-title {
        font-size: var(--gtd-text-3xl);
        text-align: center;
    }
    
    .gtd-subtitle {
        text-align: center;
        font-size: var(--gtd-text-base);
    }
    
    .gtd-stats-section {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--gtd-space-md);
        padding: var(--gtd-space-lg);
    }
    
    .gtd-mind-dump-section {
        padding: var(--gtd-space-lg);
    }
    
    .gtd-quick-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .gtd-filter-section {
        flex-direction: column;
        gap: var(--gtd-space-md);
    }
    
    .gtd-filter-group {
        justify-content: center;
    }
    
    .gtd-todos-list.gtd-view-grid {
        grid-template-columns: 1fr;
    }
    
    .gtd-todo-item {
        padding: var(--gtd-space-lg);
    }
    
    .gtd-todo-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--gtd-space-sm);
    }
    
    .gtd-form-row {
        grid-template-columns: 1fr;
    }
    
    .gtd-modal {
        padding: var(--gtd-space-md);
    }
    
    .gtd-modal-content {
        max-height: 95vh;
    }
    
    .gtd-modal-actions {
        justify-content: stretch;
        flex-direction: column;
    }
    
    .gtd-notification {
        right: var(--gtd-space-md);
        left: var(--gtd-space-md);
        max-width: none;
    }

    /* Mobile Subtodos Styles */
    .gtd-subtodos-progress {
        margin: var(--spacing-xs) 0;
        padding: var(--spacing-xs);
    }
    
    .gtd-progress-text {
        font-size: 11px;
    }
    
    .gtd-subtodo-item {
        padding: var(--spacing-xs);
        gap: var(--spacing-xs);
    }
    
    .gtd-subtodo-text {
        font-size: 13px;
    }
    
    .gtd-subtodo-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .gtd-subtodo-actions {
        align-self: flex-end;
    }
    
    .gtd-toggle-subtodos, .gtd-add-subtodo {
        font-size: 10px;
        padding: 1px 4px;
    }
}

@media (max-width: 480px) {
    .gtd-stats-section {
        grid-template-columns: 1fr;
    }
    
    .gtd-stat-number {
        font-size: var(--gtd-text-2xl);
    }
    
    .gtd-filter-group {
        flex-direction: column;
    }
    
    .gtd-select {
        min-width: unset;
    }
    
    .gtd-todo-text {
        font-size: var(--gtd-text-base);
    }
    
    .gtd-modal-header,
    .gtd-modal-body {
        padding: var(--gtd-space-lg);
    }
    
    .gtd-tabs {
        flex-direction: column;
    }
    
    .gtd-tab-btn {
        text-align: left;
        border-radius: 0;
    }
    
    .gtd-tab-btn.active::after {
        left: 0;
        right: auto;
        width: 4px;
        height: 100%;
        top: 0;
        bottom: 0;
    }
}

/* ====== High Contrast Mode ====== */
@media (prefers-contrast: high) {
    :root {
        --gtd-border-primary: #666666;
        --gtd-border-secondary: #888888;
        --gtd-text-muted: #cccccc;
    }
    
    /* High Contrast Subtodos */
    .gtd-subtodo-item {
        border-width: 2px;
    }
    
    .gtd-progress-bar {
        border: 1px solid var(--color-text);
    }
    
    .gtd-progress-fill {
        background: var(--color-text);
    }
}

/* ====== Reduced Motion ====== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    /* Reduced Motion Subtodos */
    .gtd-subtodo-item {
        transition: none;
    }
    
    .gtd-progress-fill {
        transition: none;
    }
    
    .gtd-celebration {
        animation: none;
        transition: none;
    }
}

/* ====== RTL Support ====== */
[dir="rtl"] {
    .gtd-notification {
        right: auto;
        left: var(--gtd-space-lg);
        transform: translateX(-100%);
    }
    
    .gtd-notification.gtd-notification-show {
        transform: translateX(0);
    }
}

/* ====== Print Styles ====== */
@media print {
    .gtd-header,
    .gtd-filter-section,
    .gtd-mind-dump-section,
    .gtd-modal,
    .gtd-notification,
    .gtd-btn {
        display: none !important;
    }
    
    .gtd-todos-wrapper {
        background: white !important;
        color: black !important;
    }
    
    .gtd-todo-item {
        border: 1px solid #ccc !important;
        background: white !important;
        color: black !important;
        break-inside: avoid;
    }
}

/* ====== Focus Management ====== */
.gtd-modal-open {
    overflow: hidden;
}

/* Focus trap for modals */
.gtd-modal.gtd-modal-active {
    display: flex;
}

/* Ensure proper focus indicators */
*:focus-visible {
    outline: 2px solid var(--gtd-bg-accent);
    outline-offset: 2px;
}

/* Custom scrollbar */
.gtd-items-list::-webkit-scrollbar,
.gtd-modal-content::-webkit-scrollbar {
    width: 8px;
}

.gtd-items-list::-webkit-scrollbar-track,
.gtd-modal-content::-webkit-scrollbar-track {
    background: var(--gtd-bg-secondary);
    border-radius: var(--gtd-radius-sm);
}

.gtd-items-list::-webkit-scrollbar-thumb,
.gtd-modal-content::-webkit-scrollbar-thumb {
    background: var(--gtd-border-primary);
    border-radius: var(--gtd-radius-sm);
}

.gtd-items-list::-webkit-scrollbar-thumb:hover,
.gtd-modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--gtd-border-secondary);
}