:root {
    --bg-dark: #09090b;
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --glass-bg: rgba(24, 24, 27, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-main: #fafafa;
    --text-muted: #a1a1aa;
    --error-bg: rgba(239, 68, 68, 0.1);
    --error-text: #f87171;
}

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

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

/* Background Shapes */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 15s infinite alternate ease-in-out;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: #4c1d95;
    top: -100px;
    left: -100px;
}

.shape-2 {
    width: 600px;
    height: 600px;
    background: #0f4c75;
    bottom: -150px;
    right: -150px;
    animation-delay: -5s;
}

@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }

    100% {
        transform: translate(50px, 30px) rotate(10deg);
    }
}

/* Layout */
.app-wrapper {
    width: 100%;
    max-width: 900px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
}

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

.visitor-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(4px);
    margin-right: auto;
    /* Push to left/center or keep centered with margin adjustments */
    margin-left: 20px;
}

.visitor-badge i {
    color: var(--primary);
}

.github-btn {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.github-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #ff00cc, #3333ff, #ff00cc);
    background-size: 200% 200%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
    animation: glowing 3s ease infinite;
}

.github-btn:hover {
    color: white;
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.6),
        0 0 40px rgba(139, 92, 246, 0.3);
    border-color: transparent;
}

.github-btn:hover::before {
    opacity: 1;
}

.github-btn i {
    transition: transform 0.3s ease;
}

.github-btn:hover i {
    transform: rotate(360deg);
}

@keyframes glowing {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Main Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.hero-text {
    text-align: center;
    margin-bottom: 30px;
}

.hero-text h1 {
    font-size: 2.2rem;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

/* Upload Section */
.upload-section {
    text-align: center;
}

.drop-zone {
    border: 2px dashed var(--glass-border);
    border-radius: 16px;
    padding: 60px 20px;
    transition: all 0.3s ease;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--primary);
    background: rgba(139, 92, 246, 0.05);
}

.icon-wrap {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

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

.drop-zone h3 {
    margin-bottom: 8px;
    font-size: 1.2rem;
}

.drop-zone p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* Editor Section */
.editor-section {
    animation: fadeIn 0.4s ease;
}

.preview-area {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: center;
}

.preview-card {
    flex: 1;
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.img-container {
    height: 250px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 8px;
    background: #18181b url('data:image/svg+xml;utf8,<svg width="20" height="20" xmlns="http://www.w3.org/2000/svg"><rect x="0" y="0" width="10" height="10" fill="%2327272a"/><rect x="10" y="10" width="10" height="10" fill="%2327272a"/></svg>') repeat;
    position: relative;
}

.img-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.badge {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 12px;
    font-weight: 500;
    z-index: 2;
}

.badge.original {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.badge.result {
    background: var(--primary);
    color: white;
}

.meta {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.transfer-arrow {
    color: var(--text-muted);
    font-size: 1.2rem;
}

/* Controls */
.controls-area {
    background: rgba(0, 0, 0, 0.2);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

.control-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.control-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

input[type="number"] {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 10px 14px;
    border-radius: 8px;
    color: white;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

input[type="number"]:focus {
    border-color: var(--primary);
}

select {
    width: 100%;
    padding: 10px 14px;
    padding-right: 40px;
    /* Space for arrow */
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: white;
    font-size: 0.95rem;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 1em;
    transition: border-color 0.2s;
}

select:focus {
    border-color: var(--primary);
}

/* Range Slider Styles */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    margin-top: 8px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    margin: 0 auto;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: white;
}

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

.action-buttons {
    display: flex;
    gap: 12px;
    margin-top: 10px;
    justify-content: flex-end;
}

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

/* Loader */
.loader {
    position: absolute;
    inset: 0;
    background: rgba(24, 24, 27, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 5;
    backdrop-filter: blur(2px);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

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

/* Error Styling */
.error-container {
    background: var(--error-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error-text);
    padding: 12px 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.error-container i.fa-circle-exclamation {
    font-size: 1.1rem;
}

.error-container button {
    background: none;
    border: none;
    color: var(--error-text);
    margin-left: auto;
    cursor: pointer;
    font-size: 1rem;
    opacity: 0.8;
}

.error-container button:hover {
    opacity: 1;
}

footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
}

select option {
    background-color: #1e293b;
    color: white;
}

/* Responsive */
@media (max-width: 768px) {
    .glass-card {
        padding: 24px;
    }

    .preview-area {
        flex-direction: column;
        gap: 20px;
    }

    .img-container {
        height: 200px;
    }

    .transfer-arrow {
        transform: rotate(90deg);
        margin: 10px 0;
    }

    .control-row {
        flex-direction: column;
        gap: 15px;
    }

    .action-buttons {
        flex-direction: column-reverse;
        gap: 15px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-text h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .visitor-badge {
        margin: 0;
        justify-content: center;
        width: 100%;
    }

    .logo {
        justify-content: center;
    }

    .github-btn {
        width: 100%;
        justify-content: center;
    }

    .glass-card {
        padding: 20px 15px;
    }

    .hero-text h1 {
        font-size: 1.5rem;
    }

    .drop-zone {
        padding: 40px 15px;
    }
}