:root {
    /* Color Palette - Premium Dark Mode */
    --bg-primary: #0a0a0f;
    --bg-secondary: #14141e;
    --bg-tertiary: #1c1c28;

    --accent-primary: #6366f1;
    /* Indigo */
    --accent-primary-hover: #4f46e5;
    --accent-secondary: #10b981;
    /* Emerald */

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    --transition: 0.2s ease-in-out;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform var(--transition);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal h2 {
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.modal p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.brand-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-primary), #8b5cf6);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.nav-menu {
    list-style: none;
    margin-bottom: 2rem;
}

.nav-item {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition);
    font-weight: 500;
    cursor: pointer;
}

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

.nav-item.active {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border-left: 3px solid var(--accent-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.header {
    height: 72px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    background: rgba(20, 20, 30, 0.8);
    backdrop-filter: blur(12px);
    z-index: 10;
}

.search-bar {
    position: relative;
    width: 400px;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input {
    width: 100%;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.input.no-icon {
    padding-left: 1rem;
}

.input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Dashboard Content */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.content-title {
    font-size: 1.8rem;
    font-weight: 700;
}

.filters {
    display: flex;
    gap: 1rem;
}

.tab {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

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

.tab.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Prompt Grid */
.prompt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.prompt-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.prompt-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}

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

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-link-icon {
    font-size: 1.2rem;
    color: var(--accent-primary);
    opacity: 0.8;
    flex-shrink: 0;
}

.card-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: #eab308;
    /* Yellow */
    font-size: 0.9rem;
    font-weight: 600;
    background: rgba(234, 179, 8, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

.card-preview {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    /* Standard property */
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
    min-height: 0;
    max-height: calc(1.5 * 0.95rem * 3);
    /* Force 3 lines max fallback */
    white-space: pre-wrap;
    /* Preserves manual line breaks while clamping */
    word-break: break-word;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    /* Ensure footer never disappears */
}

.tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 12px;
    font-weight: 500;
}

.card-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Detail View Layout */
.detail-layout {
    display: flex;
    height: 100%;
}

.editor-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    overflow-y: auto;
}

.editor-header {
    margin-bottom: 2rem;
}

.breadcrumb {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.prompt-title-input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 700;
    font-family: inherit;
    outline: none;
    padding: 0;
    margin-bottom: 0.5rem;
}

.prompt-title-input::placeholder {
    color: var(--text-secondary);
}

.editor-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.prompt-textarea {
    width: 100%;
    flex: 1;
    min-height: 400px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 1rem;
    line-height: 1.6;
    resize: none;
    transition: var(--transition);
}

.prompt-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.editor-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
}

.meta-sidebar {
    width: 320px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    overflow-y: auto;
}

.meta-section {
    margin-bottom: 2.5rem;
}

.meta-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 600;
}

/* Toast Notification */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 2000;
}

.toast {
    background: rgba(20, 20, 30, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease forwards;
}

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

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Variable GUI */
#variableGuiContainer {
    margin-bottom: 2rem;
}

.variable-gui-card {
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.variable-gui-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    color: var(--accent-primary);
}

.variable-gui-header i {
    font-size: 1.5rem;
}

.variable-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

#copyAssembledBtn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tag-llm {
    background: rgba(99, 102, 241, 0.2);
    color: #fff;
}

/* Footer Section */
.footer {
    width: 100%;
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    background: transparent;
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.footer-social a {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.footer-social svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
    display: block;
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-align: center;
}

.footer-links {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    align-items: center;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-divider {
    opacity: 0.3;
}