/* Estilos para las páginas de login/registro */
body {
    background-color: #0D1117;
    color: #E5E7EB;
    font-family: 'Inter', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}
.auth-container {
    background-color: #1a1f26;
    border-radius: 16px;
    border: 1px solid #30363d;
    width: 100%;
    max-width: 450px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
.auth-header {
    padding: 30px 40px;
    text-align: center;
}
.auth-header h1 {
    color: #00E0FF;
    font-size: 28px;
    font-weight: 800;
}
.auth-header h1 span {
    color: #E5E7EB;
}
.auth-tabs {
    display: flex;
    border-bottom: 1px solid #30363d;
}
.tab-link {
    flex: 1;
    padding: 15px;
    text-align: center;
    font-weight: 600;
    color: #9CA3AF; /* text-dim */
    background-color: transparent;
    border: none;
    cursor: pointer;
    text-decoration: none;
    font-size: 16px;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}
.tab-link:hover {
    color: #E5E7EB;
}
.tab-link.active {
    color: #00E0FF; /* accent-cyan */
    border-bottom-color: #00E0FF;
}
.auth-body {
    padding: 30px 40px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #9CA3AF;
}
.form-input {
    width: 100%;
    padding: 12px 15px;
    background-color: #0D1117;
    border: 1px solid #30363d;
    border-radius: 8px;
    color: #E5E7EB;
    font-size: 16px;
    transition: all 0.3s ease;
}
.form-input:focus {
    outline: none;
    border-color: #00E0FF;
    box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.3);
}
.btn-submit {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #00E0FF 0%, #10B981 100%);
    color: #0D1117;
}
.btn-submit:hover {
    opacity: 0.9;
    box-shadow: 0 4px 20px rgba(0, 224, 255, 0.4);
}
.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.auth-footer {
    padding: 20px 40px;
    text-align: center;
    font-size: 14px;
    background-color: #161b22;
    border-top: 1px solid #30363d;
}
.auth-footer a {
    color: #00E0FF;
    text-decoration: none;
    font-weight: 600;
}
.auth-footer a:hover {
    text-decoration: underline;
}
/* Alertas de error/éxito */
.alert-message {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: none;
}
.alert-message.success {
    background-color: #10B981;
    color: #FFFFFF;
}
.alert-message.error {
    background-color: #EF4444;
    color: #FFFFFF;
}