:root {
    --bg-app: #fdfcf8;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f1f5f9;
    --primary: #475569;
    --primary-hover: #1e293b;
    --text-main: #1f2937;
    --text-muted: #64748b;
    --text-inverse: #f8fafc;
    --border: #e2e8f0;
    --radius: 8px;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --footer-bg: #1e293b;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    margin: 0;
    padding: 0;
    background: transparent;
    color: var(--text-main);
    line-height: 1.6;
}

#app {
    min-height: 100vh;
}

main {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 3rem 0;
    box-sizing: border-box;
}

.container {
    max-width: 800px;
    width: 100%;
    background: #f1f5f9;
    margin: 0 auto;
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);

    h1 {
        font-size: 2.5rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
        letter-spacing: -0.025em;
        color: var(--primary-hover);
    }

    p {
        color: var(--text-muted);
        font-size: 1.1rem;
        margin: 0;
    }
}

/* Cards */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    text-align: center;

    h2 {
        margin-top: 0;
        font-size: 1.8rem;
        color: var(--primary-hover);
    }
}

/* PIN Display */
.pin-display {
    font-size: 2.5rem;
    letter-spacing: 0.5rem;
    text-align: center;
    margin-bottom: 2rem;
    font-family: monospace;
    color: var(--primary);
}

/* Numpad */
.numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    max-width: 300px;
    margin: 0 auto;

    button {
        padding: 1.5rem;
        font-size: 1.5rem;
        background: var(--bg-surface);
        color: var(--text-main);
        border: 1px solid var(--border);
        box-shadow: var(--shadow);
        margin: 0;

        &:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }
    }
}

/* Kiosk Content */
.kiosk-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

/* Kiosk Grid */
.kiosk-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
    width: 100%;
    max-width: 600px;
}

/* Kiosk Menu Stack */
.kiosk-menu-stack {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
    width: 100%;
    max-width: 600px;
}

/* Kiosk Button */
.kiosk-btn {
    padding: 2rem;
    font-size: 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 100%;
    min-height: 120px;
    margin: 0;
}

/* Buttons */
button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    transition: all 0.2s ease;

    &:hover {
        background: var(--primary-hover);
        transform: translateY(-1px);
        box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    }

    &+& {
        margin-left: 1rem;
    }
}