:root {
    /* Theme Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #f59e0b; /* Amber/Orange */
    --accent-hover: #d97706;
    --primary-btn: #6366f1; /* Indigo */
    --primary-btn-hover: #4f46e5;
    --danger-color: #ef4444;
    --border-color: #334155;

    /* Spacing */
    --container-padding: 2rem;
    --border-radius: 8px;
    --gap-sm: 0.5rem;
    --gap-md: 1rem;
    --gap-lg: 2rem;
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #cbd5e1;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

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

.view-container {
    flex: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 150px;
    display: inline-block;
    vertical-align: bottom;
}

/* Landing Page */
.landing-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    text-align: center;
}

.tool-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tool-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2rem;
}

.features-preview {
    display: flex;
    gap: var(--gap-lg);
    margin-top: 4rem;
    flex-wrap: wrap;
    justify-content: center;
}

.feature-card {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    width: 250px;
    text-align: left;
    border: 1px solid var(--border-color);
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

/* Tool UI Header */
.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
}

/* Tool Layout */
.tool-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--gap-lg);
}

/* Input Section */
.input-section {
    display: flex;
    flex-direction: column;
    gap: var(--gap-md);
}

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

.toolbar-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.toolbar-actions {
    display: flex;
    gap: var(--gap-sm);
}

textarea#text-input {
    width: 100%;
    height: 60vh;
    min-height: 400px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    font-size: 1.1rem;
    resize: vertical;
    font-family: inherit;
    transition: border-color 0.2s;
}

textarea#text-input:focus {
    outline: none;
    border-color: var(--primary-btn);
}

.modifiers-bar {
    display: flex;
    gap: var(--gap-sm);
    flex-wrap: wrap;
}

/* Results Sidebar */
.results-section {
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
}

.stats-grid.primary-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-md);
}

.stat-card {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-card.highlight {
    border-color: var(--accent-color);
    background-color: rgba(245, 158, 11, 0.1);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stats-group {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.stats-group h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.stats-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.stat-row strong {
    color: var(--text-primary);
}

.stat-row span {
    color: var(--text-secondary);
}

/* Tool Info */
.tool-info {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 2rem;
    margin-top: auto;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
}

/* Buttons */
button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-btn);
    color: white;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
}

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-weight: 500;
}

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

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.btn-danger {
    color: var(--danger-color);
    background-color: rgba(239, 68, 68, 0.1);
}

.btn-danger:hover {
    background-color: rgba(239, 68, 68, 0.2);
}

.btn-text {
    background: none;
    color: var(--text-secondary);
    padding: 0;
    font-size: 1rem;
}

.btn-text:hover {
    color: var(--primary-btn);
    text-decoration: underline;
}

.btn-icon {
    background: none;
    font-size: 1.5rem;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-utility {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid transparent;
}

.btn-utility:hover {
    color: var(--text-primary);
    border-color: var(--accent-color);
}

.full-width {
    width: 100%;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }

    textarea#text-input {
        min-height: 250px;
        height: 40vh;
    }

    .tool-title {
        font-size: 2rem;
    }
}