:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #1e1b4b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
}

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

body {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    text-align: center;
}

header {
    margin-bottom: 30px;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 10px;
    background: linear-gradient(to right, #a855f7, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
}

input[type="text"] {
    width: 100%;
    padding: 16px 20px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.4);
}

button:active {
    transform: translateY(0);
}

.qr-result-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    min-height: 220px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    padding: 24px;
    border: 1px dashed var(--card-border);
    transition: all 0.3s ease;
}

.qr-result-box.active {
    background: white;
    border-style: solid;
}

#qr-code {
    display: flex;
    justify-content: center;
    align-items: center;
}

#qr-code img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.hidden {
    display: none !important;
}

#qr-info {
    color: #1e293b;
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: 10px;
}