/* =========================================================
   ESTILOS PREMIUM MODERNOS - WEB GUNBOUND BRD
   ========================================================= */

:root {
    --bg-gradient: linear-gradient(135deg, #0a0715 0%, #120e24 50%, #06040d 100%);
    --purple-glow: rgba(147, 51, 234, 0.35);
    --cyan-glow: rgba(6, 182, 212, 0.35);
    --card-bg: rgba(20, 16, 38, 0.65);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-purple: #a855f7;
    --accent-cyan: #06b6d4;
    --success-green: #10b981;
    --error-red: #ef4444;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 20px;
    position: relative;
    overflow-x: hidden;
}

/* Luces decorativas de fondo */
body::before, body::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.5;
    pointer-events: none;
}

body::before {
    background: var(--accent-purple);
    top: 5%;
    left: 15%;
}

body::after {
    background: var(--accent-cyan);
    bottom: 10%;
    right: 15%;
}

/* Contenedor principal alineado verticalmente */
.web-wrapper {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Cabecera */
.header {
    text-align: center;
    padding-bottom: 10px;
}

.glow-text {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: linear-gradient(to right, #00f2fe, #4facfe, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 10px rgba(0, 242, 254, 0.25));
    text-transform: uppercase;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 5px;
    letter-spacing: 1px;
}

/* Tarjetas (Cards) */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 35px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    gap: 20px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    border-left: 4px solid var(--accent-cyan);
    padding-left: 12px;
    margin-bottom: 5px;
}

/* Formulario */
.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 500px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

input[type="text"],
input[type="password"] {
    background: rgba(10, 5, 20, 0.65);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 18px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 10px var(--cyan-glow);
}

/* Radios personalizados */
.radio-group {
    display: flex;
    gap: 25px;
    margin-top: 5px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.95rem;
    user-select: none;
}

.radio-label input {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: inline-block;
    position: relative;
    transition: border-color 0.2s ease;
}

.radio-label input:checked + .radio-custom {
    border-color: var(--accent-cyan);
}

.radio-custom::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--accent-cyan);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.2s ease;
}

.radio-label input:checked + .radio-custom::after {
    transform: translate(-50%, -50%) scale(1);
    box-shadow: 0 0 6px var(--accent-cyan);
}

/* Botones */
.btn {
    border: none;
    border-radius: 12px;
    padding: 16px 20px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    width: 100%;
    display: block;
    transition: transform 0.15s ease, filter 0.15s ease, box-shadow 0.15s ease;
}

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

.btn-download {
    background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
    color: #0b071e;
    box-shadow: 0 4px 15px var(--cyan-glow);
}

.btn-download:hover {
    filter: brightness(1.1);
    box-shadow: 0 6px 20px var(--cyan-glow);
}

.btn-register {
    background: linear-gradient(135deg, #a855f7 0%, #7c3aed 100%);
    color: var(--text-primary);
    box-shadow: 0 4px 15px var(--purple-glow);
}

.btn-register:hover {
    filter: brightness(1.1);
    box-shadow: 0 6px 20px var(--purple-glow);
}

/* Alertas */
.alert {
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 0.95rem;
    line-height: 1.4;
    border-left: 4px solid transparent;
    margin-bottom: 5px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.12);
    border-color: var(--success-green);
    color: #34d399;
}

.alert-error {
    background: rgba(239, 68, 68, 0.12);
    border-color: var(--error-red);
    color: #f87171;
}

/* Instrucciones */
.instructions {
    border-top: 1px solid var(--border-color);
    padding-top: 25px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.instructions h3 {
    font-size: 1.05rem;
    color: var(--text-primary);
}

.instructions ol {
    margin-left: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Pie de Página */
.footer {
    text-align: center;
    padding-top: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}