:root {
    --bg-color: #0a0a0a;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    --accent-color: #b026ff; /* Neon Purple */
    --accent-glow: rgba(176, 38, 255, 0.4);
    --input-bg: rgba(0, 0, 0, 0.3);
    --font-main: 'Outfit', sans-serif;
}

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

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

/* Background Ambient Glow */
.background-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    opacity: 0.6;
    animation: pulse 8s infinite alternate;
}

@keyframes pulse {
    0% { opacity: 0.4; transform: translate(-50%, -50%) scale(0.9); }
    100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.1); }
}

/* Glass Container */
.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 3rem;
    width: 90%;
    max-width: 450px;
    text-align: center;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: transform 0.3s ease;
}

.glass-container:hover {
    transform: translateY(-5px);
}

header h1 {
    font-weight: 600;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

header h1 i {
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-glow);
}

header p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

/* Input Section */
.input-wrapper {
    position: relative;
    margin-bottom: 2rem;
}

input[type="text"] {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-color);
    font-family: var(--font-main);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: color 0.3s ease;
}

input[type="text"]:focus + .input-icon {
    color: var(--accent-color);
}

/* QR Section */
.qr-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px dashed var(--glass-border);
    transition: all 0.3s ease;
    overflow: hidden; /* Keep QR code inside corners */
    padding: 10px; /* White border padding for QR */
}

.qr-placeholder.active {
    background: #ffffff;
    border: none;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.placeholder-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.7;
}

/* QR Code Image Override */
#qr-code img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Buttons */
.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 12px;
    background: var(--accent-color);
    color: white;
    font-family: var(--font-main);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn:hover {
    background: #c55aff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.hidden {
    display: none;
    opacity: 0;
    pointer-events: none;
}