/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #7868E6;
    --secondary-color: #B8B5FF;
    --accent-color: #FFB4B4;
    --background-color: #EDEEF7;
    --surface-color: #E4FBFF;
    --text-color: #2D2D2D;
    --text-light: #666666;
    --border-color: #D1D5DB;
    --shadow-color: rgba(120, 104, 230, 0.1);
    --error-color: #EF4444;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    
    /* Typography */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 var(--shadow-color);
    --shadow-md: 0 4px 6px -1px var(--shadow-color);
    --shadow-lg: 0 10px 15px -3px var(--shadow-color);
    --shadow-xl: 0 20px 25px -5px var(--shadow-color);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.25s ease-in-out;
    --transition-slow: 0.35s ease-in-out;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-modal: 1050;
    --z-toast: 1100;
    --z-loading: 1200;
}

/* Paper Texture Effect */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(120, 104, 230, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(184, 181, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(255, 180, 180, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><filter id="paper"><feTurbulence baseFrequency="0.04" numOctaves="5" result="noise" seed="1"/><feDiffuseLighting in="noise" lighting-color="white" surfaceScale="1"><feDistantLight azimuth="45" elevation="60"/></feDiffuseLighting></filter></defs><rect width="100%" height="100%" filter="url(%23paper)" opacity="0.1"/></svg>');
    pointer-events: none;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.header__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header__icon {
    font-size: var(--font-size-3xl);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

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


.emoji-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
}

.emoji-picker button {
    font-size: 1.5rem;
    background: #f4f4f4;
    border: 1px solid #ccc;
    border-radius: 6px;
    padding: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

.emoji-picker button:hover {
    background: #e0e0e0;
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* Tabs */
.tabs {
    display: flex;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    position: relative;
}

.tabs::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><filter id="paper"><feTurbulence baseFrequency="0.02" numOctaves="3" result="noise" seed="2"/><feDiffuseLighting in="noise" lighting-color="white" surfaceScale="0.5"><feDistantLight azimuth="45" elevation="60"/></feDiffuseLighting></filter></defs><rect width="100%" height="100%" filter="url(%23paper)" opacity="0.05"/></svg>');
    pointer-events: none;
}

.tab {
    flex: 1;
    padding: var(--spacing-lg);
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition-normal);
    position: relative;
    z-index: 1;
    color: var(--text-light);
}

.tab:hover {
    background: rgba(120, 104, 230, 0.05);
    color: var(--primary-color);
}

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

.tab__icon {
    font-size: var(--font-size-xl);
}

.tab__text {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Tab Content */
.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-panel--active {
    display: block;
}

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

/* Planner Container */
.planner-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
}

.planner-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><filter id="paper"><feTurbulence baseFrequency="0.02" numOctaves="3" result="noise" seed="3"/><feDiffuseLighting in="noise" lighting-color="white" surfaceScale="0.3"><feDistantLight azimuth="45" elevation="60"/></feDiffuseLighting></filter></defs><rect width="100%" height="100%" filter="url(%23paper)" opacity="0.03"/></svg>');
    pointer-events: none;
}

.planner-sidebar {
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-right: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.sidebar-section {
    margin-bottom: var(--spacing-xl);
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: white;
    transition: var(--transition-normal);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(120, 104, 230, 0.1);
}

.color-picker {
    width: 100%;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    background: white;
}

/* Quick Items */
.quick-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.quick-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
}

.quick-item:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.quick-item__icon {
    font-size: var(--font-size-lg);
}

.quick-item__text {
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-align: center;
}

/* Canvas Container */
.planner-canvas-container {
    position: relative;
    padding: var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    background: white;
    z-index: 1;
}

.room-canvas {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: crosshair;
    background: white;
    box-shadow: var(--shadow-md);
}

.canvas-overlay {
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    bottom: var(--spacing-lg);
    pointer-events: none;
}

.canvas-info {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
}

/* Items Container */
.items-container {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    position: relative;
}

.items-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><filter id="paper"><feTurbulence baseFrequency="0.02" numOctaves="3" result="noise" seed="4"/><feDiffuseLighting in="noise" lighting-color="white" surfaceScale="0.3"><feDistantLight azimuth="45" elevation="60"/></feDiffuseLighting></filter></defs><rect width="100%" height="100%" filter="url(%23paper)" opacity="0.03"/></svg>');
    pointer-events: none;
}

.items-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.items-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

.items-grid {
    display: grid;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.item-category {
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.category-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.category-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.item-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.item-card:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.item-card__icon {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.item-card__name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.item-card__size {
    font-size: var(--font-size-xs);
    color: var(--text-light);
}

.item-card__delete {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: var(--font-size-xs);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
}

.item-card:hover .item-card__delete {
    display: flex;
}

/* Safety Container */
.safety-container {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    position: relative;
}

.safety-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><filter id="paper"><feTurbulence baseFrequency="0.02" numOctaves="3" result="noise" seed="5"/><feDiffuseLighting in="noise" lighting-color="white" surfaceScale="0.3"><feDistantLight azimuth="45" elevation="60"/></feDiffuseLighting></filter></defs><rect width="100%" height="100%" filter="url(%23paper)" opacity="0.03"/></svg>');
    pointer-events: none;
}

.safety-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.safety-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

.safety-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-bar {
    width: 200px;
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color) 0%, var(--primary-color) 100%);
    transition: width var(--transition-normal);
}

.progress-text {
    font-weight: 600;
    color: var(--primary-color);
}

.safety-categories {
    display: grid;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.safety-category {
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.safety-items {
    display: grid;
    gap: var(--spacing-md);
}

.safety-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.safety-item:hover {
    box-shadow: var(--shadow-sm);
}

.safety-item--completed {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
}

.safety-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    margin-top: 2px;
}

.safety-checkbox--checked {
    background: var(--success-color);
    border-color: var(--success-color);
}

.safety-checkbox--checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: bold;
}

.safety-content {
    flex: 1;
}

.safety-item__title {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
}

.safety-item__description {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    line-height: 1.5;
}

.safety-item__priority {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-top: var(--spacing-xs);
    display: inline-block;
}

.safety-item__priority--high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.safety-item__priority--medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.safety-item__priority--low {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

/* Colors Container */
.colors-container {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    position: relative;
}

.colors-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><filter id="paper"><feTurbulence baseFrequency="0.02" numOctaves="3" result="noise" seed="6"/><feDiffuseLighting in="noise" lighting-color="white" surfaceScale="0.3"><feDistantLight azimuth="45" elevation="60"/></feDiffuseLighting></filter></defs><rect width="100%" height="100%" filter="url(%23paper)" opacity="0.03"/></svg>');
    pointer-events: none;
}

.colors-header {
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.colors-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

.color-sections {
    display: grid;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.color-section {
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.color-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.color-option {
    width: 60px;
    height: 60px;
    border: 3px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
}

.color-option:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.color-option--active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(120, 104, 230, 0.2);
}

.custom-color {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.custom-color label {
    font-weight: 500;
    color: var(--text-color);
}

.theme-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.theme-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
}

.theme-option:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.theme-option--active {
    border-color: var(--primary-color);
    background: rgba(120, 104, 230, 0.05);
}

.theme-preview {
    width: 60px;
    height: 40px;
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.theme-preview--soft {
    background: linear-gradient(45deg, var(--background-color) 0%, var(--surface-color) 100%);
}

.theme-preview--vibrant {
    background: linear-gradient(45deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

.theme-preview--neutral {
    background: linear-gradient(45deg, #F5F5F5 0%, #E0E0E0 100%);
}

.theme-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

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

.btn--primary:hover {
    background: #6B5DD3;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--secondary {
    background: var(--secondary-color);
    color: white;
    margin: 10px 0;
}

.btn--secondary:hover {
    background: #A29BFF;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

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

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.9);
    transition: var(--transition-normal);
}

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

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

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--text-light);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}

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

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

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

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(237, 238, 247, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: var(--z-loading);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

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

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-width: 300px;
    animation: slideIn 0.3s ease-out;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><filter id="paper"><feTurbulence baseFrequency="0.04" numOctaves="5" result="noise" seed="7"/><feDiffuseLighting in="noise" lighting-color="white" surfaceScale="1"><feDistantLight azimuth="45" elevation="60"/></feDiffuseLighting></filter></defs><rect width="100%" height="100%" filter="url(%23paper)" opacity="0.1"/></svg>');
    pointer-events: none;
}

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

.toast--error {
    background: var(--error-color);
    color: white;
}

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

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

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

/* Footer */
.footer {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-lg) 0;
    font-size: 0.8rem;
    text-align: center;
    
}

.footer__text {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.footer__link {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition-normal);
}

.footer__link:hover {
    color: white;
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .header__title {
        font-size: var(--font-size-xl);
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab {
        flex-direction: row;
        justify-content: center;
        padding: var(--spacing-md);
    }
    
    .planner-container {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .planner-sidebar {
        order: 2;
        border-right: none;
        border-top: 1px solid var(--border-color);
    }
    
    .planner-canvas-container {
        order: 1;
    }
    
    .room-canvas {
        width: 100%;
        max-width: 400px;
        height: 300px;
    }
    
    .quick-items {
        grid-template-columns: 1fr;
    }
    
    .category-items {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .color-options {
        grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
    }
    
    .color-option {
        width: 50px;
        height: 50px;
    }
    
    .theme-options {
        grid-template-columns: 1fr;
    }
    
    .safety-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
    }
    
    .safety-progress {
        justify-content: center;
    }
    
    .items-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .toast {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .header__title {
        font-size: var(--font-size-lg);
    }
    
    .header__icon {
        font-size: var(--font-size-xl);
    }
    
    .tab__icon {
        font-size: var(--font-size-lg);
    }
    
    .room-canvas {
        max-width: 300px;
        height: 250px;
    }
    
    .category-items {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
    
    .color-options {
        grid-template-columns: repeat(auto-fit, minmax(40px, 1fr));
    }
    
    .color-option {
        width: 40px;
        height: 40px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-light: #000000;
        --shadow-color: rgba(0, 0, 0, 0.5);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .header__controls,
    .tabs,
    .planner-sidebar,
    .modal,
    .loading-overlay,
    .toast-container {
        display: none !important;
    }
    
    .planner-container {
        grid-template-columns: 1fr;
    }
    
    .room-canvas {
        max-width: 100%;
        height: auto;
    }
}