:root {
    --bg: #ffffff;
    --text: #1a1a1a;
    --primary: #22c55e;
    --error: #ef4444;
    --subtext: #666666;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    transition: opacity 0.3s ease;
}

body.loading {
    opacity: 0;
}

.container {
    width: 90%;
    max-width: 400px;
    padding: 2rem;
}

.hidden {
    display: none !important;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

h1.denied {
    color: var(--error);
    font-size: 2rem;
    margin-bottom: 1rem;
}

p {
    color: var(--text);
    margin-bottom: 1rem;
    font-size: 1rem;
}

p.subtext {
    color: var(--subtext);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

/* UI Elements */
.btn {
    appearance: none;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: transform 0.1s ease, opacity 0.2s ease;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-error {
    background-color: var(--error);
    color: white;
}

/* QR Code */
.qr-container {
    background: white;
    padding: 1rem;
    display: inline-block;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.qr-container img {
    margin: 0 auto;
}

/* Icons */
.icon-error, .icon-success {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.icon-error {
    color: var(--error);
}

.icon-success {
    color: var(--primary);
}