/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inconsolata:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Variables */
:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary: #EC4899;
    --accent: #8B5CF6;
    --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    --gradient-glow: conic-gradient(from 180deg at 50% 50%, #6366F1 0deg, #EC4899 180deg, #6366F1 360deg);

    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-muted: #9CA3AF;
    --text-light: #F9FAFB;

    --bg-primary: #FFFFFF;
    --bg-secondary: #F3F4F6;
    --bg-card: #FFFFFF;

    --border-color: #E5E7EB;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Inconsolata', monospace;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;

    --header-height: 70px;
}

/* Reset & Base Styles */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.23);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.btn-icon {
    padding: 8px;
    border-radius: var(--radius-full);
}

/* Alerts */
.alert {
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-error {
    background: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}

.alert-success {
    background: #ECFDF5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
}

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

.nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
    /* Changed from default */
    margin: 0;
    padding: 0;
}

.nav-auth {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
    z-index: 1002;
    position: relative;
}

.mobile-menu-btn svg {
    width: 32px;
    /* INCREASED SIZE */
    height: 32px;
    /* INCREASED SIZE */
    stroke: currentColor;
    display: block;
}

/* Mobile Menu Container (Off-Canvas Style) */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: auto;
    /* Not full width */
    right: 0;
    /* Align right */
    width: auto;
    /* Auto width based on content */
    min-width: 250px;
    /* Minimum width */
    max-width: 90%;
    height: auto;
    /* Auto height based on content */
    border-bottom-left-radius: var(--radius-lg);
    /* Rounded corner */
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    /* Border around */
    border-top: none;
    /* Already has header border */
    border-right: none;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    /* ALIGN ITEMS RIGHT */
    gap: 16px;
    transform: translateY(-20px);
    /* Slight slide down/fade effect instead of side slide */
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1001;
    /* High z-index */
    box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
    transform: translateY(0);
    /* Slide in */
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
}

.mobile-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    /* Align list items right */
    gap: 16px;
    width: 100%;
}

.mobile-nav a {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
    /* Prevent wrapping */
}

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

.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    align-items: flex-end;
    /* Align buttons right */
    margin-top: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.mobile-menu-actions .btn {
    width: 100%;
    /* Buttons take full width of container */
}

/* Footer layout */
.footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.footer-top {
    padding: 64px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 64px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 16px;
    max-width: 300px;
}

.footer-col h4 {
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--primary);
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* Hero Section */
.hero {
    position: relative;
    padding: calc(var(--header-height) + 80px) 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    /* RESTORED ALLIGNMENT */
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    /* Removed padding-top */
}

.hero-title {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    /* Reduced font size from 1.75rem/2.75rem */
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title .highlight {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    /* Reduced from 48px to 24px for less space */
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Upload Area */
.upload-area {
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px 24px;
    /* Reduced padding (smaller size) */
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    max-width: 600px;
    /* Limited width (smaller size) */
    margin: 0 auto;
}

.upload-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.upload-area:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.upload-area:hover::before {
    opacity: 0.05;
}

.upload-area.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    transform: scale(1.02);
}

.upload-content {
    position: relative;
    z-index: 1;
}

.upload-icon {
    margin-bottom: 16px;
    /* Reduced margin */
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.upload-content h3 {
    font-size: 1.25rem;
    /* Reduced font size */
    font-weight: 700;
    margin-bottom: 4px;
    /* Reduced margin */
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.upload-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    /* Reduced font size */
}

.upload-loading {
    text-align: center;
}

.upload-loading.hidden {
    display: none;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: spin 1s linear infinite;
}

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

.upload-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* URL Modal */
.url-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    padding: 24px;
}

.url-modal.hidden {
    display: none;
}

.url-modal-content {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.url-modal-content input {
    width: 100%;
    padding: 16px;
    font-size: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    outline: none;
}

.url-modal-content input:focus {
    border-color: var(--primary);
}

/* Hero Background Elements */
.hero-bg-elements {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-element {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.bg-element-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
    animation: pulse 8s ease-in-out infinite;
}

.bg-element-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary);
    bottom: -100px;
    left: -100px;
    animation: pulse 6s ease-in-out infinite reverse;
}

.bg-element-3 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 10s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.2;
        transform: scale(1);
    }

    50% {
        opacity: 0.4;
        transform: scale(1.1);
    }
}

/* Result Section */
.result-section {
    padding: 80px 0;
}

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

.result-container {
    text-align: center;
}

.result-images {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.result-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.result-image img {
    max-width: 350px;
    max-height: 350px;
    object-fit: contain;
}

.image-label {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Sections Global */
.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 64px;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.features-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.features-content {
    max-width: 900px;
    margin: 0 auto;
}

.showcase-item {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.showcase-item.active {
    display: grid;
    animation: fadeIn 0.5s ease;
}

.showcase-before,
.showcase-after {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: white;
}

.showcase-before::after {
    content: 'Original';
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.showcase-after::after {
    content: 'Removed';
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    position: relative;
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-normal);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.step-icon {
    margin-bottom: 24px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-secondary);
}

/* Stats Section */
.stats {
    padding: 60px 0;
    background: var(--primary);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-unit {
    font-size: 1.5rem;
    font-weight: 600;
    opacity: 0.9;
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 8px;
}

/* CTA Section */
.cta {
    padding: 100px 0;
    text-align: center;
    background: radial-gradient(circle at center, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.cta p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 32px;
}

/* Transparent BG for Showcases */
.transparent-bg {
    background: repeating-conic-gradient(#f3f4f6 0% 25%, transparent 0% 50%) 50% / 20px 20px;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer Fixes */
.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.footer-social a:hover {
    color: var(--primary);
}

.footer-legal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-legal nav {
    display: flex;
    gap: 24px;
}

.footer-legal nav a {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.25rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }

    .showcase-item {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {

    .nav-list,
    .nav-auth {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title {
        font-size: 1.75rem !important;
    }

    /* HIDE SUBTITLE ON MOBILE */
    .hero-subtitle {
        display: none;
    }

    .hero {
        padding-top: calc(var(--header-height) + 40px);
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .result-images {
        flex-direction: column;
    }

    .steps-grid,
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}