:root {
    --bg-dark: #0a0a0c;
    --panel-bg: rgba(20, 20, 24, 0.6);
    --panel-border: rgba(255, 255, 255, 0.08);
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --accent: #a855f7;
    --accent-glow: rgba(168, 85, 247, 0.5);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --error: #ef4444;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

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

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

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: orb-float 20s ease-in-out infinite alternate;
}

.orb-1 {
    top: -10%;
    left: 20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
}

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

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

/* Typography & Layout */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.font-light { font-weight: 300; }

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 48px;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--panel-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover {
    color: var(--text-main);
}

.install-app-btn {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.2));
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: var(--success);
    padding: 10px 20px;
    border-radius: 24px;
    font-weight: 600;
    font-size: 0.95rem;
    font-family: var(--font-heading);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

.install-app-btn:hover {
    background: rgba(16, 185, 129, 0.25);
    border-color: var(--success);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
}

.install-app-btn i {
    font-size: 1.25rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 80px 0 40px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 20px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--panel-border);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    line-height: 1.1;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -1.5px;
}

.gradient-text {
    background: linear-gradient(135deg, #a855f7, #6366f1, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Main Panel */
.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
    margin-bottom: 60px;
}

/* Upload Area */
.upload-area {
    position: relative;
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.2);
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
}

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

.upload-content {
    text-align: center;
    padding: 40px;
}

.upload-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
    margin: 0 auto 16px;
    transition: var(--transition);
}

.upload-area:hover .upload-icon-wrapper {
    background: var(--primary);
    color: #fff;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.upload-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* Preview Area */
.preview-container {
    position: absolute;
    inset: 4px;
    border-radius: calc(var(--radius-md) - 4px);
    overflow: hidden;
    background: #000;
}

.preview-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.remove-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0,0,0,0.6);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(4px);
    transition: var(--transition);
    z-index: 10;
}

.remove-btn:hover {
    background: var(--error);
    border-color: var(--error);
    transform: scale(1.1);
}

.preview-overlay {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Action Area */
.action-area {
    margin-top: 24px;
    text-align: center;
}

.options-row {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.premium-select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--panel-border);
    color: var(--text-main);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height='24'%3E%3Cpath fill='none' d='M0 0h24v24H0z'/%3E%3Cpath d='M12 15l-4.243-4.243 1.415-1.414L12 12.172l2.828-2.829 1.415 1.414z' fill='rgba(255,255,255,0.7)'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.premium-select:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
}

.premium-select option {
    background-color: var(--bg-dark);
    color: var(--text-main);
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    padding: 16px 40px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.primary-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(99, 102, 241, 0.5);
    filter: brightness(1.1);
}

.primary-btn:active:not(:disabled) {
    transform: translateY(0);
}

.primary-btn:disabled {
    background: rgba(255,255,255,0.05);
    color: rgba(255,255,255,0.3);
    box-shadow: none;
    cursor: not-allowed;
    border: 1px solid rgba(255,255,255,0.1);
}

.error-message {
    color: var(--error);
    margin-top: 12px;
    font-size: 0.9rem;
    min-height: 20px;
}

/* Result Area */
.result-area {
    margin-top: 32px;
    animation: fade-in 0.5s ease;
}

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

.divider {
    border: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--panel-border), transparent);
    margin-bottom: 32px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.result-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--panel-border);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.2);
}

.prompt-container {
    position: relative;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    min-height: 140px;
    padding: 24px;
    overflow: hidden;
}

.prompt-text {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-main);
    white-space: pre-wrap;
}

/* Loader */
.loader-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 5;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* SEO Content Section */
.seo-content {
    margin-top: 40px;
    margin-bottom: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--panel-border);
    animation: fade-in 0.8s ease;
}

.content-block {
    margin-bottom: 40px;
}

.content-block h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--text-main);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.content-block p {
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-block strong, .content-block em {
    color: #fff;
    font-weight: 600;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.content-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: var(--transition);
}

.content-card:hover {
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.content-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.content-card h3 i {
    color: var(--primary);
    font-size: 1.4rem;
}

.content-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Footer */
.footer {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--panel-border);
    margin-top: auto;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    .hero {
        padding: 40px 0 20px;
    }
    .glass-panel {
        padding: 24px;
    }
    .navbar {
        padding: 16px 24px;
    }
}