:root {
    --primary: #4361ee;
    --primary-hover: #3a56d4;
    --accent: #f72585;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --success: #10b981;
    --error: #ef4444;
    --font-main: 'Outfit', sans-serif;
    --radius: 12px;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
}

body {
    background-color: var(--dark-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.main-header {
    padding: 20px 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero-section {
    padding: 60px 0;
    text-align: center;
    background: radial-gradient(circle at 50% 0%, #1e1b4b 0%, var(--dark-bg) 50%);
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.highlight {
    color: var(--primary);
    -webkit-text-fill-color: var(--primary);
}

.intro-text {
    max-width: 700px;
    margin: 0 auto 30px;
    color: var(--text-muted);
    font-size: 1.1rem;
}

.benefit-list {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.benefit-list li {
    background: rgba(255, 255, 255, 0.05);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Tool Interface */
.compress-tool-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

/* Upload Upload Area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 60px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary);
    background: rgba(67, 97, 238, 0.05);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.icon-upload {
    color: var(--primary);
    background: rgba(67, 97, 238, 0.1);
    padding: 20px;
    border-radius: 50%;
}

.upload-content h3 {
    font-size: 1.2rem;
}

.upload-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Tool Controls (Main Studio) */
.tool-controls {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.preview-area {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

#imagePreview {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

#fileName {
    font-weight: 600;
    color: var(--text-main);
}

.dims-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Studio Panel Grid */
.studio-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 768px) {
    .studio-panel {
        grid-template-columns: 1fr;
    }
}

.studio-col h4 {
    margin-bottom: 20px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Form Elements Fix */
select,
input[type="text"],
input[type="number"] {
    background-color: rgba(30, 41, 59, 0.8);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: 8px;
    outline: none;
    font-family: inherit;
    transition: all 0.3s;
}

select option {
    background-color: var(--card-bg);
    /* Fix for white-on-white */
    color: var(--text-main);
    padding: 10px;
}

select:focus,
input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.setting-group {
    margin-bottom: 25px;
}

.setting-group label {
    display: block;
    margin-bottom: 12px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Improved Intent Buttons (Grid) */
.intent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
}

.intent-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 15px 10px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.intent-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.intent-card.active {
    background: rgba(67, 97, 238, 0.15);
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(67, 97, 238, 0.1);
}

.intent-card .icon {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.intent-card span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.intent-card.active span {
    color: var(--primary);
}

.intent-card .dims-hint {
    font-size: 0.7rem;
    color: #64748b;
}

/* Toggle Switch for Advanced */
.advanced-toggle-wrapper {
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.advanced-options {
    background: rgba(0, 0, 0, 0.2);
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
    border: 1px solid var(--border);
}

.primary-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px 30px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.glow-effect {
    box-shadow: 0 0 20px rgba(67, 97, 238, 0.4);
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
}

.secondary-btn:hover {
    color: white;
    border-color: white;
}

/* Result View */
.result-view {
    text-align: center;
}

.success-header h2 {
    margin-top: 15px;
    margin-bottom: 30px;
    color: var(--success);
}

.comparison-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
}

.stat-box {
    background: rgba(255, 255, 255, 0.03);
    padding: 15px 25px;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.stat-box .label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.stat-box .val {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
}

.success-icon {
    font-size: 3rem;
}

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

/* SEO Content Section */
.seo-content {
    background: var(--dark-bg);
    padding: 80px 0;
    color: var(--text-muted);
}

.content-block {
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.content-block h2 {
    color: var(--text-main);
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.content-block h3 {
    color: var(--text-main);
    font-size: 1.4rem;
    margin-top: 30px;
    margin-bottom: 15px;
}

.text-content p {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.text-content ul,
.text-content ol {
    margin-bottom: 20px;
    padding-left: 20px;
}

.text-content li {
    margin-bottom: 10px;
}

/* Footer */
.main-footer {
    background: #020617;
    padding: 60px 0 20px;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 10px;
}

.footer-links h4 {
    color: white;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

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

.copyright {
    text-align: center;
    color: var(--text-muted);
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Loading/Error */
.progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: 20px;
    overflow: hidden;
}

.progress-bar .fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.3s;
}

.error-msg {
    color: var(--error);
    margin-top: 15px;
    text-align: center;
    background: rgba(239, 68, 68, 0.1);
    padding: 10px;
    border-radius: 8px;
}

.warning-msg {
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
    padding: 10px;
    border-radius: 8px;
    margin-top: 10px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    text-align: center;
    border: 1px solid rgba(245, 158, 11, 0.2);
}