:root {
    --primary-bg: #385843;
    --accent-color: #9a6e53;
    --text-color: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
}

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

body {
    background-color: var(--primary-bg);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

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

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #ccc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p.subtitle {
    opacity: 0.8;
    font-size: 1.1rem;
}

.main-interface {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

@media (max-width: 900px) {
    .main-interface {
        grid-template-columns: 1fr;
    }
}

.canvas-container {
    position: relative;
    width: 100%;
    min-height: 500px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 2px dashed var(--glass-border);
}

.canvas-container.has-image {
    border: none;
    background: transparent;
}

canvas {
    max-width: 100%;
    max-height: 600px;
    object-fit: contain;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.upload-section {
    text-align: center;
    padding: 2rem;
    border: 2px dashed var(--glass-border);
    border-radius: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-section:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-color);
}

.btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    background-color: #a87b5f;
}

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

.backgrounds-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 1rem;
}

.bg-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.bg-thumb:hover {
    transform: scale(1.05);
}

.bg-thumb.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(154, 110, 83, 0.5);
}

.loader {
    display: none;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 4px solid var(--accent-color);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.hidden {
    display: none !important;
}