:root {
    --choc: #56443F;
    --choc-dark: #1A1513;
    --cream: #E4C7B7;
    --gold: #D4AF37;
    --white: #FFFFFF;
}

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

body {
    background-color: var(--cream);
    font-family: 'Outfit', sans-serif;
    color: var(--choc);
    display: flex;
    justify-content: center;
    min-height: 100vh;
}

.glow-app-container {
    width: 100%;
    max-width: 420px;
    padding: 60px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Header */
.main-header { text-align: center; margin-bottom: 40px; }
.brand-logo { height: 50px; margin-bottom: 12px; display: block; margin: 0 auto 12px auto; }
.brand-subtitle { font-size: 0.75rem; letter-spacing: 5px; opacity: 0.8; font-weight: 200; }

/* Viewport de Tarjeta (Resuelve sombras cortadas) */
.card-viewport {
    perspective: 1200px;
    width: 100%;
    height: 240px; 
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-inner {
    position: relative;
    width: 310px;
    height: 185px;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.card-inner.is-flipped { transform: rotateY(180deg); }

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 22px;
    box-shadow: 0 25px 50px rgba(86, 68, 63, 0.35);
    overflow: hidden;
}

/* Frente */
.card-front {
    background: linear-gradient(135deg, var(--choc) 0%, #3D302D 100%);
    padding: 30px;
    border: 1px solid rgba(255,255,255,0.05);
    z-index: 2;
}

.card-inner.diamond-tier .card-front {
    background: linear-gradient(135deg, var(--choc-dark) 0%, #000 100%);
    border: 1px solid rgba(228, 199, 183, 0.4);
}

.card-content { height: 100%; display: flex; flex-direction: column; justify-content: space-between; }
.tier-badge { font-size: 0.65rem; letter-spacing: 3px; color: var(--cream); display: block; }
.member-name { color: white; font-weight: 200; font-size: 1.1rem; text-transform: uppercase; letter-spacing: 2px; margin-top: 10px; }

.visit-counter { display: flex; gap: 12px; margin-top: auto; padding-bottom: 5px; }
.dot { width: 14px; height: 14px; border-radius: 50%; background: rgba(228, 199, 183, 0.1); border: 1px solid rgba(228, 199, 183, 0.3); }
.dot.active { background: var(--cream); box-shadow: 0 0 15px var(--cream); border: none; }
.dot.gift { border: 1px dashed var(--cream); }

/* Reverso */
.card-back {
    background: linear-gradient(135deg, var(--gold) 0%, #B8860B 100%);
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: 20px;
}

.reward-icon { font-size: 2.5rem; display: block; margin-bottom: 10px; }

/* UI Elements */
.ui-section { width: 100%; margin-top: 30px; }
.hidden { display: none; }
.status-msg { margin: 20px 0; text-align: center; font-size: 0.85rem; font-weight: 600; color: var(--gold); min-height: 1.5em; }

.input-field { position: relative; width: 100%; margin-bottom: 25px; }
.input-field input { width: 100%; padding: 12px 0; border: none; border-bottom: 1px solid rgba(86, 68, 63, 0.3); background: transparent; outline: none; font-family: 'Outfit'; font-size: 1rem; }
.input-field label { position: absolute; left: 0; top: 12px; transition: 0.3s; pointer-events: none; opacity: 0.5; }
.input-field input:focus ~ label, .input-field input:not(:placeholder-shown) ~ label { top: -15px; font-size: 0.75rem; opacity: 1; font-weight: 600; }

.btn-primary { background: var(--choc); color: white; border: none; padding: 22px; border-radius: 50px; cursor: pointer; letter-spacing: 2px; font-size: 0.8rem; width: 100%; }

/* QR Centrado */
.qr-wrapper { 
    background: white; 
    padding: 25px; 
    border-radius: 25px; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    box-shadow: 0 15px 40px rgba(0,0,0,0.08); 
    width: fit-content;
    margin: 20px auto 0 auto;
}
.qr-instruction { font-size: 0.7rem; letter-spacing: 1px; opacity: 0.6; text-align: center; }