:root {
    --primary: #4285f4;
    --primary-dark: #3367d6;
    --secondary: #34a853;
    --danger: #ea4335;
    --warning: #fbbc05;
    --text-light: #f8f9fa;
    --text-dark: #202124;
    --bg-light: #ffffff;
    --bg-dark: #202124;
    --panel-light: #f1f3f4;
    --panel-dark: #303134;
    --border-light: #dadce0;
    --border-dark: #5f6368;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    --font-family: 'Arial', sans-serif;
    --transition: all 0.3s ease;
}

[data-theme="light"] {
    --text: var(--text-dark);
    --bg: var(--bg-light);
    --panel: var(--panel-light);
    --border: var(--border-light);
}

[data-theme="dark"] {
    --text: var(--text-light);
    --bg: var(--bg-dark);
    --panel: var(--panel-dark);
    --border: var(--border-dark);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg);
    color: var(--text);
    transition: var(--transition);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: var(--panel);
    padding: 1rem;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: bold;
}

.controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: 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(--secondary);
    color: white;
}

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-outline:hover {
    background-color: var(--panel);
}

main {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

@media (min-width: 992px) {
    main {
        flex-direction: row;
        gap: 1rem;
    }
}

.tools-panel {
    background-color: var(--panel);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
}

@media (min-width: 992px) {
    .tools-panel {
        width: 300px;
        margin-bottom: 0;
        overflow-y: auto;
        max-height: calc(100vh - 130px);
        position: sticky;
        top: 80px;
    }
}

.canvas-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.canvas-wrapper {
    position: relative;
    background-color: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    min-height: 400px;
    overflow: hidden;
}

#canvas {
    background-color: white;
    box-shadow: var(--shadow);
    margin: 2rem auto;
    transition: var(--transition);
}

.toolbar {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0.5rem;
    background-color: var(--panel);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.tool-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.divider {
    width: 1px;
    height: 24px;
    background-color: var(--border);
    margin: 0 0.5rem;
}

.section-title {
    font-size: 1rem;
    font-weight: 500;
    margin: 1rem 0 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title:first-child {
    margin-top: 0;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

select, input, textarea {
    width: 100%;
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border);
    background-color: var(--bg);
    color: var(--text);
    transition: var(--transition);
}

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

.image-preview {
    width: 100%;
    height: 80px;
    object-fit: contain;
    background-color: var(--panel);
    border: 1px solid var(--border);
    border-radius: 4px;
    margin-top: 0.5rem;
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.template-item {
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.template-item:hover {
    border-color: var(--primary);
}

.template-item.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary);
}

.template-img {
    width: 100%;
    height: 50px;
    background-color: var(--panel);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--text);
}

.template-name {
    padding: 0.25rem;
    font-size: 0.8rem;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.color-picker {
    width: 100%;
    height: 40px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
}

.font-preview {
    font-size: 1rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background-color: var(--bg);
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.slider-container input[type="range"] {
    flex: 1;
}

.slider-value {
    min-width: 40px;
    text-align: center;
    font-size: 0.8rem;
}

.image-list {
    margin-top: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    max-height: 200px;
    overflow-y: auto;
}

.image-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg);
}

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

.image-item-preview {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
}

.image-item-name {
    flex: 1;
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem;
    border-radius: 4px;
    background-color: var(--bg);
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow);
    max-width: 300px;
    z-index: 1000;
    transform: translateY(150%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateY(0);
}

.toast-message {
    font-size: 0.9rem;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg);
    border-radius: 8px;
    padding: 1.5rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 500;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text);
}

.modal-body {
    margin-bottom: 1rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.saved-projects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.project-card {
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

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

.project-thumbnail {
    width: 100%;
    height: 100px;
    background-color: var(--panel);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-info {
    padding: 0.5rem;
}

.project-name {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-date {
    font-size: 0.7rem;
    color: var(--text);
    opacity: 0.7;
}

.project-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
}

.project-actions button {
    padding: 0.25rem;
    font-size: 0.8rem;
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
}

.context-menu {
    position: absolute;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    box-shadow: var(--shadow);
    z-index: 1000;
    min-width: 150px;
    display: none;
}

.context-menu.show {
    display: block;
}

.context-menu-item {
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.context-menu-item:hover {
    background-color: var(--panel);
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s linear infinite;
}

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

.dropzone {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 2rem 1rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.dropzone:hover {
    border-color: var(--primary);
}

.dropzone.active {
    border-color: var(--primary);
    background-color: rgba(66, 133, 244, 0.1);
}

.dropzone-text {
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 120px;
    background-color: var(--bg-dark);
    color: var(--text-light);
    text-align: center;
    border-radius: 4px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.75rem;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

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

/* Layout templates */
.layout-grid {
    display: grid;
    grid-gap: 5px;
}

.layout-item {
    background-color: #f0f0f0;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .btn-text {
        display: none;
    }
    
    .toolbar {
        justify-content: center;
    }
    
    .modal-content {
        width: 95%;
        padding: 1rem;
    }
}