@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600&display=swap');

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
    overflow: hidden;
}

/* El círculo de luz que se ve en el mockup */
body::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--primary);
    filter: blur(150px);
    border-radius: 50%;
    z-index: -1;
    top: 10%;
    left: 10%;
    opacity: 0.3;
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 40px;
    border-radius: 32px;
    width: 380px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    text-align: center;
}

h3 {
    margin-bottom: 8px;
    font-size: 1.8rem;
}

.subtitle {
    color: var(--text-dim);
    margin-bottom: 30px;
    font-size: 0.9rem;
}

.input-group {
    text-align: left;
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 8px;
    margin-left: 4px;
}

input {
    width: 100%;
    padding: 14px;
    /* Blanco muy transparente para el look acuoso */
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    color: white;
    box-sizing: border-box;
    transition: all 0.3s;
    backdrop-filter: blur(4px);
    /* Difumina un poco lo de atrás dentro del campo */
}

input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.12);
    border-color: #4ade80;
    /* El borde brilla en verde al escribir */
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.1);
}

/* Para que el texto que escribas adentro se vea bien */
input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

button {
    width: 100%;
    padding: 16px;
    /* Degradado verde vibrante */
    background: linear-gradient(135deg, #4a7ede 0%, #22c55e 100%);
    color: #ffffff;
    /* Un verde muy oscuro para que se lea bien */
    border: none;
    border-radius: 16px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.4);
    filter: brightness(1.1);
}