/* ====================
   PREMIUM HOMEPAGE REDESIGN
   Modern Glassmorphism UI
   ==================== */

/* Enhanced Variables */
:root {
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --glass-hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    --backdrop-blur: blur(20px);
}

[data-theme="dark"] {
    --glass-bg: rgba(30, 30, 30, 0.85);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --glass-hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    --color-bg: #1a1a1a;
    --color-surface: #252525;
    --color-surface-alt: #2a2a2a;
    --color-text: #e5e5e5;
    --color-text-secondary: #a0a0a0;
    --color-border: rgba(255, 255, 255, 0.1);
}

/* ====================
   PREMIUM HEADER
   ==================== */

.header {
    text-align: center;
    margin-bottom: 4rem;
    padding: 4rem 2rem;
    background: linear-gradient(135deg,
            rgba(99, 102, 241, 0.08) 0%,
            rgba(139, 92, 246, 0.08) 50%,
            rgba(236, 72, 153, 0.08) 100%);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: headerGlow 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes headerGlow {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    50% {
        transform: translate(10%, 10%) scale(1.1);
    }
}

.header-title {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg,
            #6366f1 0%,
            #8b5cf6 40%,
            #ec4899 80%,
            #f43f5e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.25rem;
    letter-spacing: -1px;
    position: relative;
    z-index: 1;
    text-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
}

.header-subtitle {
    font-size: 1.35rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    letter-spacing: 0.3px;
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

/* ====================
   GLASSMORPHISM DRAG & DROP
   ==================== */

.upload-zone {
    border: 3px dashed transparent;
    border-radius: var(--radius-xl);
    padding: 4rem 3rem;
    margin-bottom: 3rem;
    text-align: center;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 3px;
    background: linear-gradient(135deg,
            rgba(99, 102, 241, 0.5) 0%,
            rgba(139, 92, 246, 0.5) 50%,
            rgba(236, 72, 153, 0.5) 100%);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    opacity: 1;
    transition: opacity 400ms ease;
}

.upload-zone:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--glass-hover-shadow);
}

.upload-zone:hover::before {
    opacity: 1;
    animation: borderGlow 2s ease-in-out infinite;
}

@keyframes borderGlow {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

.upload-zone.dragover {
    background: linear-gradient(135deg,
            rgba(99, 102, 241, 0.15) 0%,
            rgba(139, 92, 246, 0.15) 100%);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.25));
    transition: transform 300ms ease;
}

.upload-zone:hover .upload-icon {
    transform: scale(1.1) rotate(5deg);
}

.upload-text {
    font-size: 1.25rem;
    color: var(--color-text);
    font-weight: 500;
    margin: 0;
}

.browse-link {
    color: var(--color-primary);
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    position: relative;
    transition: color var(--transition-fast);
}

.browse-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(1);
    transition: transform var(--transition-fast);
}

.browse-link:hover {
    color: var(--color-accent);
}

.browse-link:hover::after {
    transform: scaleX(1.1);
}

/* ====================
   PREMIUM BUTTON TOOLBAR
   ==================== */

.actions-section {
    margin-bottom: 3rem;
    padding: 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: all 400ms ease;
}

.actions-section:hover {
    box-shadow: var(--glass-hover-shadow);
}

.button-group {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 1.75rem;
}

.button-group.secondary-actions {
    margin-bottom: 0;
}

.btn {
    padding: 1rem 2rem;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 0.65rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    position: relative;
    overflow: hidden;
    min-height: 48px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 600ms ease, height 600ms ease;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

.btn:active {
    transform: translateY(-2px) scale(0.98);
}

.btn-icon {
    font-size: 1.25rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.btn-primary {
    background: linear-gradient(135deg, #6366f1 0%, #5558DD 100%);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
}

.btn-accent {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
}

.btn-conversion {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
}

/* ====================
   PREMIUM CODE EDITORS
   ==================== */

.editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.editor-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
}

.editor-panel:hover {
    box-shadow: var(--glass-hover-shadow);
    border-color: rgba(99, 102, 241, 0.3);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-border);
}

.panel-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.panel-info {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.editor-textarea {
    width: 100%;
    min-height: 500px;
    padding: 1.5rem;
    font-family: 'SF Mono', 'Monaco', 'Consolas', 'Courier New', monospace;
    font-size: 1rem;
    line-height: 1.7;
    background: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    resize: vertical;
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
}

.editor-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow:
        inset 0 2px 8px rgba(0, 0, 0, 0.05),
        0 0 0 4px rgba(99, 102, 241, 0.12),
        0 4px 12px rgba(99, 102, 241, 0.15);
    transform: translateY(-2px);
}

.editor-textarea::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.6;
}

.icon-btn {
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.25rem;
}

.icon-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

/* ====================
   SEO CONTENT - ENHANCED
   ==================== */

.seo-content {
    margin-top: 6rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.content-section {
    margin-bottom: 4rem;
    padding: 3.5rem 3rem;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: all 400ms ease;
}

.content-section:hover {
    box-shadow: var(--glass-hover-shadow);
}

.content-section h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--color-text);
    position: relative;
    padding-bottom: 1.25rem;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 5px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 3px;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.content-section p {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
}

/* Enhanced Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin: 3.5rem 0;
}

.feature-card {
    padding: 3rem 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    box-shadow: var(--glass-shadow);
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--glass-hover-shadow);
    border-color: rgba(99, 102, 241, 0.4);
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: 1.75rem;
    display: block;
    filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.35));
    transition: transform 300ms ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--color-text);
}

.feature-card p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* Benefits List - Enhanced */
.benefits-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.benefits-list li {
    padding: 2rem;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-lg);
    border-left: 5px solid var(--color-primary);
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
}

.benefits-list li:hover {
    transform: translateX(8px);
    box-shadow: var(--glass-hover-shadow);
    border-left-color: var(--color-accent);
}

.benefits-list strong {
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.1rem;
    display: block;
    margin-bottom: 0.5rem;
}

/* Use Cases - Enhanced */
.use-cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 2.5rem;
}

.use-case {
    padding: 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
}

.use-case:hover {
    transform: scale(1.05);
    box-shadow: var(--glass-hover-shadow);
    border-color: rgba(139, 92, 246, 0.4);
}

.use-case h4 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--color-text);
}

.use-case p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* FAQ Section - Enhanced */
.faq-section {
    background: linear-gradient(135deg,
            rgba(99, 102, 241, 0.05) 0%,
            rgba(139, 92, 246, 0.05) 100%);
}

.faq-item {
    margin-bottom: 2.5rem;
    padding: 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
}

.faq-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--glass-hover-shadow);
    transform: translateY(-2px);
}

.faq-item:last-child {
    margin-bottom: 0;
}

.faq-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.faq-item h3::before {
    content: '❓';
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.3));
}

.faq-item p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
    padding-left: 3rem;
}

/* ====================
   RESPONSIVE - MOBILE PREMIUM
   ==================== */

@media (max-width: 768px) {
    .header {
        padding: 3rem 1.5rem;
        margin-bottom: 3rem;
    }

    .header-title {
        font-size: 2.5rem;
        letter-spacing: -0.5px;
    }

    .header-subtitle {
        font-size: 1.1rem;
    }

    .upload-zone {
        padding: 3rem 2rem;
        margin-bottom: 2.5rem;
    }

    .upload-icon {
        font-size: 3.5rem;
    }

    .upload-text {
        font-size: 1.1rem;
    }

    .actions-section {
        padding: 2rem 1.5rem;
    }

    .button-group {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    .btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
        justify-content: center;
    }

    .editor-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 3rem;
    }

    .editor-panel {
        padding: 1.5rem;
    }

    .editor-textarea {
        min-height: 400px;
        padding: 1.25rem;
        font-size: 0.95rem;
    }

    .content-section {
        padding: 2.5rem 2rem;
        margin-bottom: 3rem;
    }

    .content-section h2 {
        font-size: 1.85rem;
    }

    .features-grid,
    .use-cases {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .benefits-list {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-card,
    .use-case {
        padding: 2rem 1.75rem;
    }

    .faq-item {
        padding: 2rem 1.5rem;
    }

    .faq-item p {
        padding-left: 2rem;
    }
}

@media (max-width: 480px) {
    .header-title {
        font-size: 2rem;
    }

    .header-subtitle {
        font-size: 1rem;
    }

    .button-group {
        grid-template-columns: 1fr;
    }

    .btn {
        width: 100%;
    }
}