@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&display=swap');

:root {
    --bg-gradient: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --accent: #00d2ff;
    --text-main: #f0f0f0;
    --text-dim: #b0b0b0;
}

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

body {
    background: var(--bg-gradient);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem;
    width: 100%;
    max-width: 900px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

header h1 {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

header p {
    color: var(--text-dim);
    font-weight: 300;
}

.upload-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.upload-zone {
    background: rgba(0, 0, 0, 0.2);
    border: 2px dashed rgba(255,255,255,0.2);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(0, 210, 255, 0.05);
    transform: translateY(-2px);
}

.upload-zone input[type="file"] {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
}

.upload-zone h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #fff;
}

.upload-zone p {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.config-section {
    grid-column: 1 / -1;
    background: rgba(0,0,0,0.15);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 10px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    transition: color 0.3s;
}

.tab-btn:hover {
    color: #fff;
}

.tab-btn.active {
    color: var(--accent);
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
}

.tab-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tab-content.active {
    display: flex;
}

#tab-rules {
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

.config-section label {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.config-section input {
    background: rgba(255,255,255,0.1);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    width: 80px;
    text-align: center;
}

.actions {
    grid-column: 1 / -1;
    text-align: center;
    margin-top: 1rem;
}

.btn-primary {
    background: var(--accent);
    color: #0f2027;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 210, 255, 0.4);
}

.status-hidden { display: none; }
.status-visible {
    display: block;
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    animation: fadeIn 0.3s ease;
}

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