:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --panel-bg: rgba(30, 41, 59, 0.7);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --accent-color: #ec4899;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* Top Nav */
.top-nav {
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--panel-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-add-business {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display:flex;
    align-items: center;
    gap: 8px;
}

.btn-add-business:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

/* Background Mesh Gradients */
.background-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #3b82f6 0%, transparent 70%);
    animation-duration: 15s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

.container {
    width: 100%;
    max-width: 900px;
    padding: 2rem;
    margin-top: 2rem;
    z-index: 1;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.header .subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Glass Panel */
.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 1rem;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
    color: var(--text-muted);
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.5);
    color: var(--primary-color);
}

/* Tab Content */
.converter-box {
    display: none;
    animation: fadeIn 0.4s ease-out forwards;
}

.converter-box.active {
    display: block;
}

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

.box-header {
    text-align: center;
    margin-bottom: 2rem;
}

.box-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.box-header p {
    color: var(--text-muted);
}

/* Drop Area */
.drop-area {
    border: 2px dashed rgba(148, 163, 184, 0.4);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(15, 23, 42, 0.3);
    margin-bottom: 1.5rem;
}

.drop-area:hover, .drop-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.drop-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.drop-area:hover .drop-icon {
    transform: translateY(-5px);
}

.drop-area h3 {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.drop-area .highlight {
    color: var(--primary-color);
    text-decoration: underline;
}

.drop-area .formats {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.file-list {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.file-item {
    background: rgba(255,255,255,0.1);
    padding: 5px 10px;
    border-radius: 8px;
    font-size: 0.85rem;
}

/* Convert Button */
.convert-btn {
    width: 100%;
    background: linear-gradient(to right, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.convert-btn:hover {
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
    transform: translateY(-2px);
}

.convert-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Progress Area */
.progress-container {
    margin-top: 1.5rem;
    text-align: center;
}

.progress-container.hidden {
    display: none;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width 0.3s ease;
}

/* Animated striped bar while processing */
.progress-fill.processing {
    background-image: linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
    background-size: 1rem 1rem;
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    from { background-position: 1rem 0; }
    to { background-position: 0 0; }
}

.progress-status {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Result Area */
.result-area {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 16px;
    text-align: center;
}

.result-area.hidden {
    display: none;
}

.result-area.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
}

.result-area.error .result-icon {
    color: var(--accent-color);
}

.result-icon {
    font-size: 2.5rem;
    color: #10b981;
    margin-bottom: 0.5rem;
}

.preview-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

/* PDF Preview */
.preview-wrapper {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
    background: #fff;
    margin-bottom: 1.25rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.pdf-preview {
    width: 100%;
    height: 500px;
    border: none;
    display: block;
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.preview-open-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--text-color);
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.preview-open-btn:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}

/* Footer */
footer {
    margin-top: auto;
    padding: 2rem 0;
    text-align: center;
    color: var(--text-muted);
}

/* SEO Content Section */
.seo-content {
    margin-top: 3rem;
    padding: 2.5rem;
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    box-shadow: 0 15px 40px -12px rgba(0, 0, 0, 0.4);
}

.seo-content h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem 0;
    background: linear-gradient(135deg, #fff, #a5b4fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.seo-content h2:first-child {
    margin-top: 0;
}

.seo-content p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.seo-content ol,
.seo-content ul {
    color: var(--text-muted);
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.seo-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.seo-content strong {
    color: var(--text-color);
}

@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }
    .logo {
        font-size: 2rem;
    }
    .drop-area {
        padding: 2rem 1rem;
    }
    .pdf-preview {
        height: 350px;
    }
    .result-actions {
        flex-direction: column;
    }
    .download-btn,
    .preview-open-btn {
        width: 100%;
        justify-content: center;
    }
    .seo-content {
        padding: 1.5rem;
    }
}