:root {
    --bg-color: #050505;
    --text-color: #f0f0f0;
    --text-muted: #aaaaaa;
    --accent-color: #7928ca;
    --accent-secondary: #ff0080;
    --accent-glow: rgba(121, 40, 202, 0.4);
    --glass-bg: rgba(20, 20, 20, 0.6);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-highlight: rgba(255, 255, 255, 0.08);
    --border-radius: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 600px;
    z-index: 1;
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -2px;
    background: linear-gradient(to right, #fff, var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
    text-align: center;
}

p.subtitle {
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 32px;
    font-size: 1.1rem;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-top: 1px solid var(--glass-highlight);
    border-radius: var(--border-radius);
    padding: 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.input-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 16px;
    color: white;
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    min-height: 120px;
    transition: border-color 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.btn {
    width: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
    filter: brightness(1.1);
}

.btn:active { transform: translateY(0); }

.result-panel {
    margin-top: 24px;
    display: none;
    animation: fadeIn 0.4s ease;
}

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

.result-url {
    background: rgba(255, 255, 255, 0.05);
    padding: 12px 16px;
    border-radius: 8px;
    font-family: monospace;
    word-break: break-all;
    margin-bottom: 12px;
    border: 1px dashed var(--glass-border);
}

.copy-btn {
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: var(--accent-color);
    color: white;
}

.glass-panel.drag-over {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 40px var(--accent-glow);
    transform: scale(1.02);
}

.file-info {
    margin-top: 12px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    display: none;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
    border: 1px solid var(--glass-border);
}

.file-info .remove-file {
    color: var(--accent-secondary);
    cursor: pointer;
    font-weight: 800;
    margin-left: 10px;
}