:root {
    --color-background: #000000;
    --color-text: #ffffff;
    --color-text-secondary: #cccccc;
    --color-primary: #1a73e8;
    --color-success: #28a745;
    --color-secondary: #6c757d;
    --color-input-bg: #333333;
    --color-divider: #444444;
    --color-whatsapp: #25D366;
    --color-card-bg: #111111;
    --border-radius-sm: 5px;
    --border-radius-lg: 50px;
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
}
  
/* Reset y estilos base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
  
body {
    background-color: var(--color-background);
    color: var(--color-text);
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    padding: var(--spacing-lg);
}
  
.container {
    width: 100%;
    max-width: 450px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
  
/* Cabecera */
header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}
  
.logo {
    width: 180px;
    height: auto;
    margin-bottom: var(--spacing-lg);
}
  
h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
}
  
h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}
  
h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}
  
/* Tarjeta de usuario */
.card {
    background-color: var(--color-card-bg);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
  
.user-header {
    text-align: left;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-divider);
}
  
.user-email {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}
  
/* Secciones */
.login-section,
.register-section {
    margin-bottom: var(--spacing-lg);
}
  
.phone-prefix {
    text-align: left;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}
  
/* Formularios */
.form-group {
    margin-bottom: var(--spacing-md);
}
  
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}
  
input {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--color-input-bg);
    border: 1px solid var(--color-divider);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    transition: border-color 0.3s ease;
}
  
input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}
  
/* Botones */
.button {
    padding: var(--spacing-sm);
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease;
}
  
.button:hover {
    transform: translateY(-1px);
}
  
.button:active {
    transform: translateY(1px);
}
  
.button-primary {
    background-color: var(--color-primary);
}
  
.button-primary:hover {
    background-color: #1567d3;
}
  
.button-success {
    background-color: var(--color-success);
}
  
.button-success:hover {
    background-color: #218838;
}
  
.button-secondary {
    background-color: var(--color-secondary);
}
  
.button-secondary:hover {
    background-color: #5a6268;
}
  
.button-row {
    display: flex;
    gap: var(--spacing-md);
}
  
.button-row .button {
    flex: 1;
}
  
.buttonG {
    width: 250px;
    height: auto;
}
  
/* Footer */
footer {
    margin-top: var(--spacing-xl);
    text-align: center;
}
  
.whatsapp-text {
    margin-bottom: var(--spacing-lg);
}
  
.whatsapp-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--color-whatsapp);
    font-size: var(--font-size-md);
    transition: opacity 0.3s ease;
}
  
.whatsapp-link:hover {
    opacity: 0.8;
}
  
.whatsapp-icon {
    width: 36px;
    height: 36px;
    margin-right: var(--spacing-sm);
}
  
.bottom-divider {
    width: 50%;
    height: 1px;
    background-color: var(--color-divider);
    margin: 0 auto;
}
  
/* Estilos para el mensaje de bienvenida */
.welcome-message {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}
  
.message-text {
    font-size: var(--font-size-md);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}
  
/* Estilos para el divisor con texto */
.section-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-xl) 0;
}
  
.section-divider::before,
.section-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background-color: var(--color-divider);
}

.resend-link {
    color: var(--color-whatsapp);
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.3s ease;
}

.resend-link:hover {
    opacity: 0.8;
}
  
/* Responsive */
@media (max-width: 480px) {
    body {
        padding: var(--spacing-sm);
    }
    
    .container {
        width: 100%;
    }
    
    .button-row {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Nuevos estilos para la página de verificación */
.verification-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.code-info {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.resend-text {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

/* Estilos para la verificación con un solo input */
.verification-input-container {
    display: flex;
    justify-content: center;
    margin: var(--spacing-lg) 0;
    width: 100%;
}

.verification-input {
    width: 200px;
    height: 70px;
    text-align: center;
    font-size: 30px;
    font-weight: 700;
    background-color: var(--color-input-bg);
    border: 2px solid var(--color-divider);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    letter-spacing: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.verification-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.3);
}

/* Ajuste responsive para el input de verificación */
@media (max-width: 480px) {
    .verification-input {
        width: 160px;
        height: 60px;
        font-size: 24px;
    }
}